during fiscal 2019 , the company generated its highest annual revenue since its initial public offering and reported increases in headcount and backlog for the year . revenue increased 8.7 % from fiscal 2018 to fiscal 2019 primarily driven by continued strength in client demand , which led to increased client staff headcount , and an increase in client staff labor , as well as improved contract performance . revenue also benefited from higher billable expenses as compared to the prior year . operating income increased 15.9 % to $ 602.4 million in fiscal 2019 from $ 519.7 million in fiscal 2018 , which reflects an increase in operating margin to 9.0 % from 8.4 % in the comparable year . the increase in operating income was primarily driven by the same factors driving revenue growth as well as improved contract performance . during fiscal 2019 the company also benefited from an $ 11.2 million reduction in expense as a result of an amendment and associated revaluation of our long term disability plan liability . the company also incurred incremental legal costs during fiscal 2018 and 2019 in response to the u.s. department of justice investigation and matters which purport to relate to the investigation , a portion of which was offset by the receipt of insurance reimbursements . we expect to incur additional costs in the future . based on the information currently available , the company is not able to reasonably estimate the expected long-term incremental legal costs or amounts that may be reimbursed associated with this investigation and these related matters . 44 non-gaap measures we publicly disclose certain non-gaap financial measurements , including revenue , excluding billable expenses , adjusted operating income , adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income , and adjusted diluted earnings per share , or adjusted diluted eps , because management uses these measures for business planning purposes , including to manage our business against internal projected results of operations and measure our performance . we view adjusted operating income , adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income , and adjusted diluted eps as measures of our core operating business , which exclude the impact of the items detailed below , as these items are generally not operational in nature . these non-gaap measures also provide another basis for comparing period to period results by excluding potential differences caused by non-operational and unusual or non-recurring items . in addition , we use revenue , excluding billable expenses because it provides management useful information about the company 's operating performance by excluding the impact of costs that are not indicative of the level of productivity of our consulting staff headcount and our overall direct labor , which management believes provides useful information to our investors about our core operations . we also utilize and discuss free cash flow , because management uses this measure for business planning purposes , measuring the cash generating ability of the operating business , and measuring liquidity generally . we present these supplemental measures because we believe that these measures provide investors and securities analysts with important supplemental information with which to evaluate our performance , long-term earnings potential , or liquidity , as applicable , and to enable them to assess our performance on the same basis as management . these supplemental performance measurements may vary from and may not be comparable to similarly titled measures by other companies in our industry . revenue , excluding billable expenses , adjusted operating income , adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income , adjusted diluted eps , and free cash flow are not recognized measurements under accounting principles generally accepted in the united states , or gaap , and when analyzing our performance or liquidity , as applicable , investors should ( i ) evaluate each adjustment in our reconciliation of revenue to revenue , excluding billable expenses , operating income to adjusted operating income , net income to adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income and adjusted diluted earnings per share , and net cash provided by operating activities to free cash flow , ( ii ) use revenue , excluding billable expenses , adjusted operating income , adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income , and adjusted diluted eps in addition to , and not as an alternative to , revenue , operating income , net income or diluted eps , as measures of operating results , each as defined under gaap and ( iii ) use free cash flow in addition to , and not as an alternative to , net cash provided by operating activities as a measure of liquidity , each as defined under gaap . we have defined the aforementioned non-gaap measures as follows : `` revenue , excluding billable expenses `` represents revenue less billable expenses . we use revenue , excluding billable expenses because it provides management useful information about the company 's operating performance by excluding the impact of costs that are not indicative of the level of productivity of our consulting staff headcount and our overall direct labor , which management believes provides useful information to our investors about our core operations . `` adjusted operating income `` represents operating income before : ( i ) adjustments related to the amortization of intangible assets resulting from the acquisition of our company by the carlyle group ( the “ carlyle acquisition ” ) , and ( ii ) transaction costs , fees , losses , and expenses , including fees associated with debt prepayments . story_separator_special_tag compared to time-and-materials and cost-reimbursable contracts , fixed-price contracts generally offer higher profit margin opportunities because we receive the full benefit of any cost savings but generally involve greater financial risk because we bear the impact of any cost overruns . in the aggregate , the contract type mix in our revenue for any given period will affect that period 's profitability . changes in contract type as a result of re-competes and new business could influence the percentage/mix in unanticipated ways . 50 the table below presents the percentage of total revenue for each type of contract : replace_table_token_10_th note : upon the adoption of topic 606 in fiscal 2019 , the contract type descriptions noted above have been aligned to the revenue by contract type descriptions found in note 3 to our accompanying consolidated financial statements . contract diversity and revenue mix we provide services to our clients through a large number of single award contracts , contract vehicles , and multiple award contract vehicles . most of our revenue is generated under indefinite delivery/indefinite quantity , or idiq , contract vehicles , which include multiple award government wide acquisition contract vehicles , or gwacs , and general services administration multiple award schedule contracts , or gsa schedules , and certain single award contracts . gwacs and gsa schedules are available to all u.s. government agencies . any number of contractors typically compete under multiple award idiq contract vehicles for task orders to provide particular services , and we earn revenue under these contract vehicles only to the extent that we are successful in the bidding process for task orders . no single task order under any idiq contract represented more than 3.8 % of our revenue in fiscal 2019 . no single definite contract accounted for more than 2.8 % of our revenue in fiscal 2019. we generate revenue under our contracts and task orders through our provision of services as both a prime contractor and subcontractor , as well as from the provision of services by subcontractors under contracts and task orders for which we act as the prime contractor . for fiscal 2019 , 2018 , and 2017 , 92 % , 91 % , and 91 % , respectively , of our revenue was generated by contracts and task orders for which we served as a prime contractor ; 8 % , 9 % , and 9 % , respectively , of our revenue was generated by contracts and task orders for which we served as a subcontractor ; and approximately 24 % , 25 % , and 25 % , respectively , of our revenue was generated by services provided by our subcontractors . the mix of these types of revenue affects our operating margin . substantially all of our operating margin is derived from direct consulting staff labor as the portion of our operating margin derived from fees we earn on services provided by our subcontractors is not significant . we view growth in direct consulting staff labor as the primary driver of earnings growth . direct consulting staff labor growth is driven by consulting staff headcount growth , after attrition , and total backlog growth . our people revenue from our contracts is derived from services delivered by consulting staff and , to a lesser extent , from our subcontractors . our ability to hire , retain , and deploy talent with skills appropriately aligned with client needs is critical to our ability to grow our revenue . we continuously evaluate whether our talent base is properly sized and appropriately compensated and contains an optimal mix of skills to be cost competitive and meet the rapidly evolving needs of our clients . we seek to achieve that result through recruitment and management of capacity and compensation . as of march 31 , 2019 , 2018 , and 2017 , we employed approximately 26,100 , 24,600 , and 23,300 people , respectively , of which approximately 23,400 , 22,100 , and 21,000 , respectively , were consulting staff . contract backlog we define backlog to include the following three components : funded backlog . funded backlog represents the revenue value of orders for services under existing contracts for which funding is appropriated or otherwise authorized less revenue previously recognized on these contracts . unfunded backlog . unfunded backlog represents the revenue value of orders ( including optional orders ) for services under existing contracts for which funding has not been appropriated or otherwise authorized . priced options . priced contract options represent 100 % of the revenue value of all future contract option periods under existing contracts that may be exercised at our clients ' option and for which funding has not been appropriated or otherwise authorized . our backlog does not include contracts that have been awarded but are currently under protest and also does not include any task orders under idiq contracts , except to the extent that task orders have been awarded to us under those contracts . 51 the following table summarizes the value of our contract backlog at the respective dates presented : replace_table_token_11_th our total backlog consists of remaining performance obligations , certain orders under contracts for which the period of performance has expired , and unexercised option period and other unexercised optional orders . as of march 31 , 2019 , the company has $ 5.8 billion of remaining performance obligations and we expect to recognize more than half of the remaining performance obligations as revenue over the next 12 months , and approximately three quarters over the next 24 months . the remainder is expected to be recognized thereafter . however , given the uncertainties discussed below , as well as the risks described in `` item 1a . risk factors `` , we can give no assurance that we will be able to convert our backlog into revenue in any particular period , if at all . our backlog includes orders under contracts

net cash used in financing activities was $ 413.4 million in fiscal 2019 compared to $ 203.1 million in the prior year . the increase in net cash used in financing activities was primarily due to net proceeds of $ 343.3 million received in fiscal 2018 from the issuance of the senior notes . this was partially offset by $ 130 million in net borrowings on the revolving credit facility in fiscal 2018 as well as a $ 17.5 million decrease in share repurchases in fiscal 2019 as compared to the prior year . 60 dividends and share repurchases the company paid $ 0.80 in dividends per share to shareholders of record in fiscal 2019 . on may 28 , 2019 , the company announced a regular quarterly cash dividend in the amount of $ 0.23 per share . the quarterly dividend is payable on june 28 , 2019 to stockholders of record on june 14 , 2019. the following table summarizes the cash distributions recognized in the consolidated statement of cash flows : replace_table_token_14_th ( 1 ) amounts represent recurring dividends that were declared and paid for during each quarter of fiscal 2019 , 2018 , and 2017 , respectively . ( 2 ) dividend equivalents are distributions made to option holders equal to the previously declared special dividends . on december 12 , 2011 , the board of directors approved a $ 30.0 million share repurchase program , which was further increased by the board of directors on ( i ) january 27 , 2015 to $ 180.0 million , ( ii ) january 25 , 2017 to $ 410.0 million , ( iii ) november 2 , 2017 to $ 610.0 million and ( iv ) may 24 , 2018 to $ 910.0 million .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```net cash used in financing activities was $ 413.4 million in fiscal 2019 compared to $ 203.1 million in the prior year . the increase in net cash used in financing activities was primarily due to net proceeds of $ 343.3 million received in fiscal 2018 from the issuance of the senior notes . this was partially offset by $ 130 million in net borrowings on the revolving credit facility in fiscal 2018 as well as a $ 17.5 million decrease in share repurchases in fiscal 2019 as compared to the prior year . 60 dividends and share repurchases the company paid $ 0.80 in dividends per share to shareholders of record in fiscal 2019 . on may 28 , 2019 , the company announced a regular quarterly cash dividend in the amount of $ 0.23 per share . the quarterly dividend is payable on june 28 , 2019 to stockholders of record on june 14 , 2019. the following table summarizes the cash distributions recognized in the consolidated statement of cash flows : replace_table_token_14_th ( 1 ) amounts represent recurring dividends that were declared and paid for during each quarter of fiscal 2019 , 2018 , and 2017 , respectively . ( 2 ) dividend equivalents are distributions made to option holders equal to the previously declared special dividends . on december 12 , 2011 , the board of directors approved a $ 30.0 million share repurchase program , which was further increased by the board of directors on ( i ) january 27 , 2015 to $ 180.0 million , ( ii ) january 25 , 2017 to $ 410.0 million , ( iii ) november 2 , 2017 to $ 610.0 million and ( iv ) may 24 , 2018 to $ 910.0 million .
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 Suspicious Activity Report : during fiscal 2019 , the company generated its highest annual revenue since its initial public offering and reported increases in headcount and backlog for the year . revenue increased 8.7 % from fiscal 2018 to fiscal 2019 primarily driven by continued strength in client demand , which led to increased client staff headcount , and an increase in client staff labor , as well as improved contract performance . revenue also benefited from higher billable expenses as compared to the prior year . operating income increased 15.9 % to $ 602.4 million in fiscal 2019 from $ 519.7 million in fiscal 2018 , which reflects an increase in operating margin to 9.0 % from 8.4 % in the comparable year . the increase in operating income was primarily driven by the same factors driving revenue growth as well as improved contract performance . during fiscal 2019 the company also benefited from an $ 11.2 million reduction in expense as a result of an amendment and associated revaluation of our long term disability plan liability . the company also incurred incremental legal costs during fiscal 2018 and 2019 in response to the u.s. department of justice investigation and matters which purport to relate to the investigation , a portion of which was offset by the receipt of insurance reimbursements . we expect to incur additional costs in the future . based on the information currently available , the company is not able to reasonably estimate the expected long-term incremental legal costs or amounts that may be reimbursed associated with this investigation and these related matters . 44 non-gaap measures we publicly disclose certain non-gaap financial measurements , including revenue , excluding billable expenses , adjusted operating income , adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income , and adjusted diluted earnings per share , or adjusted diluted eps , because management uses these measures for business planning purposes , including to manage our business against internal projected results of operations and measure our performance . we view adjusted operating income , adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income , and adjusted diluted eps as measures of our core operating business , which exclude the impact of the items detailed below , as these items are generally not operational in nature . these non-gaap measures also provide another basis for comparing period to period results by excluding potential differences caused by non-operational and unusual or non-recurring items . in addition , we use revenue , excluding billable expenses because it provides management useful information about the company 's operating performance by excluding the impact of costs that are not indicative of the level of productivity of our consulting staff headcount and our overall direct labor , which management believes provides useful information to our investors about our core operations . we also utilize and discuss free cash flow , because management uses this measure for business planning purposes , measuring the cash generating ability of the operating business , and measuring liquidity generally . we present these supplemental measures because we believe that these measures provide investors and securities analysts with important supplemental information with which to evaluate our performance , long-term earnings potential , or liquidity , as applicable , and to enable them to assess our performance on the same basis as management . these supplemental performance measurements may vary from and may not be comparable to similarly titled measures by other companies in our industry . revenue , excluding billable expenses , adjusted operating income , adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income , adjusted diluted eps , and free cash flow are not recognized measurements under accounting principles generally accepted in the united states , or gaap , and when analyzing our performance or liquidity , as applicable , investors should ( i ) evaluate each adjustment in our reconciliation of revenue to revenue , excluding billable expenses , operating income to adjusted operating income , net income to adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income and adjusted diluted earnings per share , and net cash provided by operating activities to free cash flow , ( ii ) use revenue , excluding billable expenses , adjusted operating income , adjusted ebitda , adjusted ebitda margin on revenue , adjusted ebitda margin on revenue , excluding billable expenses , adjusted net income , and adjusted diluted eps in addition to , and not as an alternative to , revenue , operating income , net income or diluted eps , as measures of operating results , each as defined under gaap and ( iii ) use free cash flow in addition to , and not as an alternative to , net cash provided by operating activities as a measure of liquidity , each as defined under gaap . we have defined the aforementioned non-gaap measures as follows : `` revenue , excluding billable expenses `` represents revenue less billable expenses . we use revenue , excluding billable expenses because it provides management useful information about the company 's operating performance by excluding the impact of costs that are not indicative of the level of productivity of our consulting staff headcount and our overall direct labor , which management believes provides useful information to our investors about our core operations . `` adjusted operating income `` represents operating income before : ( i ) adjustments related to the amortization of intangible assets resulting from the acquisition of our company by the carlyle group ( the “ carlyle acquisition ” ) , and ( ii ) transaction costs , fees , losses , and expenses , including fees associated with debt prepayments . story_separator_special_tag compared to time-and-materials and cost-reimbursable contracts , fixed-price contracts generally offer higher profit margin opportunities because we receive the full benefit of any cost savings but generally involve greater financial risk because we bear the impact of any cost overruns . in the aggregate , the contract type mix in our revenue for any given period will affect that period 's profitability . changes in contract type as a result of re-competes and new business could influence the percentage/mix in unanticipated ways . 50 the table below presents the percentage of total revenue for each type of contract : replace_table_token_10_th note : upon the adoption of topic 606 in fiscal 2019 , the contract type descriptions noted above have been aligned to the revenue by contract type descriptions found in note 3 to our accompanying consolidated financial statements . contract diversity and revenue mix we provide services to our clients through a large number of single award contracts , contract vehicles , and multiple award contract vehicles . most of our revenue is generated under indefinite delivery/indefinite quantity , or idiq , contract vehicles , which include multiple award government wide acquisition contract vehicles , or gwacs , and general services administration multiple award schedule contracts , or gsa schedules , and certain single award contracts . gwacs and gsa schedules are available to all u.s. government agencies . any number of contractors typically compete under multiple award idiq contract vehicles for task orders to provide particular services , and we earn revenue under these contract vehicles only to the extent that we are successful in the bidding process for task orders . no single task order under any idiq contract represented more than 3.8 % of our revenue in fiscal 2019 . no single definite contract accounted for more than 2.8 % of our revenue in fiscal 2019. we generate revenue under our contracts and task orders through our provision of services as both a prime contractor and subcontractor , as well as from the provision of services by subcontractors under contracts and task orders for which we act as the prime contractor . for fiscal 2019 , 2018 , and 2017 , 92 % , 91 % , and 91 % , respectively , of our revenue was generated by contracts and task orders for which we served as a prime contractor ; 8 % , 9 % , and 9 % , respectively , of our revenue was generated by contracts and task orders for which we served as a subcontractor ; and approximately 24 % , 25 % , and 25 % , respectively , of our revenue was generated by services provided by our subcontractors . the mix of these types of revenue affects our operating margin . substantially all of our operating margin is derived from direct consulting staff labor as the portion of our operating margin derived from fees we earn on services provided by our subcontractors is not significant . we view growth in direct consulting staff labor as the primary driver of earnings growth . direct consulting staff labor growth is driven by consulting staff headcount growth , after attrition , and total backlog growth . our people revenue from our contracts is derived from services delivered by consulting staff and , to a lesser extent , from our subcontractors . our ability to hire , retain , and deploy talent with skills appropriately aligned with client needs is critical to our ability to grow our revenue . we continuously evaluate whether our talent base is properly sized and appropriately compensated and contains an optimal mix of skills to be cost competitive and meet the rapidly evolving needs of our clients . we seek to achieve that result through recruitment and management of capacity and compensation . as of march 31 , 2019 , 2018 , and 2017 , we employed approximately 26,100 , 24,600 , and 23,300 people , respectively , of which approximately 23,400 , 22,100 , and 21,000 , respectively , were consulting staff . contract backlog we define backlog to include the following three components : funded backlog . funded backlog represents the revenue value of orders for services under existing contracts for which funding is appropriated or otherwise authorized less revenue previously recognized on these contracts . unfunded backlog . unfunded backlog represents the revenue value of orders ( including optional orders ) for services under existing contracts for which funding has not been appropriated or otherwise authorized . priced options . priced contract options represent 100 % of the revenue value of all future contract option periods under existing contracts that may be exercised at our clients ' option and for which funding has not been appropriated or otherwise authorized . our backlog does not include contracts that have been awarded but are currently under protest and also does not include any task orders under idiq contracts , except to the extent that task orders have been awarded to us under those contracts . 51 the following table summarizes the value of our contract backlog at the respective dates presented : replace_table_token_11_th our total backlog consists of remaining performance obligations , certain orders under contracts for which the period of performance has expired , and unexercised option period and other unexercised optional orders . as of march 31 , 2019 , the company has $ 5.8 billion of remaining performance obligations and we expect to recognize more than half of the remaining performance obligations as revenue over the next 12 months , and approximately three quarters over the next 24 months . the remainder is expected to be recognized thereafter . however , given the uncertainties discussed below , as well as the risks described in `` item 1a . risk factors `` , we can give no assurance that we will be able to convert our backlog into revenue in any particular period , if at all . our backlog includes orders under contracts

