million charge related to u.s. tax reform . net income increased 230.2 % to $ 240.3 million compared to $ 72.8 million in 2017 . expressed as a percentage of revenues , net income increased 8.0 % compared to last year , which was largely driven by the improved effective tax rate as well as the improvement in income from operations as a percentage of revenues . diluted earnings per share increased 221.2 % to $ 4.24 for the year ended december 31 , 2018 from $ 1.32 in 2017 . cash provided by operations increased $ 99.4 million , or 51.5 % , to $ 292.2 million during 2018 as compared to last year . the operating results in any period are not necessarily indicative of the results that may be expected for any future period . 27 critical accounting policies we prepare our consolidated financial statements in accordance with u.s. generally accepted accounting principles ( “ gaap ” ) , which require us to make judgments , estimates and assumptions that affect : ( i ) the reported amounts of assets and liabilities , ( ii ) the disclosure of contingent assets and liabilities at the end of each reporting period and ( iii ) the reported amounts of revenues and expenses during each reporting period . we evaluate these estimates and assumptions based on historical experience , knowledge and assessment of current business and other conditions , and expectations regarding the future based on available information and reasonable assumptions , which together form a basis for making judgments about matters not readily apparent from other sources . since the use of estimates is an integral component of the financial reporting process , actual results could differ from those estimates . some of our accounting policies require higher degrees of judgment than others in their application . when reviewing our audited consolidated financial statements , you should consider ( i ) our selection of critical accounting policies , ( ii ) the judgment and other uncertainties affecting the application of such policies and ( iii ) the sensitivity of reported results to changes in conditions and assumptions . we consider the policies discussed below to be critical to an understanding of our consolidated financial statements as their application places significant demands on the judgment of our management . an accounting policy is considered critical if it requires an accounting estimate to be made based on assumptions about matters that are highly uncertain at the time the estimate is made , and if different estimates that reasonably could have been used , or changes in the accounting estimates that are reasonably likely to occur periodically , could materially impact the consolidated financial statements . we believe that the following critical accounting policies are the most sensitive and require more significant estimates and assumptions used in the preparation of our consolidated financial statements . you should read the following descriptions of critical accounting policies , judgments and estimates in conjunction with our audited consolidated financial statements and other disclosures included elsewhere in this annual report . revenues — as discussed in note 1 “ business and summary of significant accounting policies ” in the notes to our consolidated financial statements in this annual report on form 10-k , we adopted the new accounting standard asu 2014-09 , “ revenue from contracts with customers ” ( topic 606 ) as amended using the modified retrospective method . this resulted in different revenue recognition accounting policies applied to the years presented in our consolidated financial statements . for the year ended december 31 , 2018 we recognize revenues when control of goods or services is passed to a customer in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services . such control may be transferred over time or at a point in time depending on satisfaction of obligations stipulated by the contract . consideration expected to be received may consist of both fixed and variable components and is allocated to each separately identifiable performance obligation based on the performance obligation 's relative standalone selling price . variable consideration usually takes the form of volume-based discounts , service level credits , price concessions or incentives . determining the estimated amount of such variable consideration involves assumptions and judgment that can have an impact on the amount of revenues reported . we derive revenues from a variety of service arrangements , which have been evolving to provide more customized and integrated solutions to customers by combining software engineering with customer experience design , business consulting and technology innovation services . fees for these contracts may be in the form of time-and-materials or fixed-price arrangements . we generate the majority of our revenues under time-and-material contracts , which are billed using hourly , daily or monthly rates to determine the amounts to be charged directly to the customer . we apply a practical expedient and revenues related to time-and-material contracts are recognized based on the right to invoice for services performed . fixed-price contracts include maintenance and support arrangements , which may exceed one year in duration . maintenance and support arrangements generally relate to the provision of ongoing services and revenues for such contracts are recognized ratably over the expected service period . fixed-price contracts also include application development arrangements , where progress towards satisfaction of the performance obligation is measured using input or output methods and input methods are used only when there is a direct correlation between hours incurred and the end product delivered . assumptions , risks and uncertainties inherent in the estimates used to measure progress could affect the amount of revenues , receivables and deferred revenues at each reporting period . revenues from licenses which have significant stand-alone functionality are recognized at a point in time when control of the license is transferred to the customer . story_separator_special_tag revenues by customer location is different from revenues by reportable segment in our consolidated financial statements included elsewhere in this annual report . segments are not based on the geographic location of the customers , but instead they are based on the location of the company 's management responsible for a particular customer or market . the following table sets forth revenues by customer location by amount and as a percentage of our revenues for the periods indicated : replace_table_token_9_th ( 1 ) cis includes revenues from customers in belarus , kazakhstan , russia and ukraine . ( 2 ) apac , which stands for asia pacific , includes revenues from customers in southeast asia and australia . 2018 compared to 2017 during the year ended december 31 , 2018 , revenues in our largest geography , north america , were $ 1,099.2 million growing $ 258.5 million , or 30.7 % , from $ 840.7 million reported for the year ended december 31 , 2017 . revenues from this geography accounted for 59.6 % of total revenues in 2018 , an increase from 58.0 % in the prior year . the united states continued to be our largest customer location contributing revenues of $ 1,029.3 million in 2018 compared to $ 783.6 million in 2017 . 33 revenues in our europe geography were $ 612.5 million , an increase of $ 101.2 million , or 19.8 % , over $ 511.3 million in the previous year . revenues in this geography accounted for 33.2 % of consolidated revenues in 2018 as compared to 35.2 % in the previous year . the top three revenue contributing customer location countries in europe were the united kingdom , switzerland and germany generating revenues of $ 200.9 million , $ 144.4 million and $ 80.8 million in 2018 , respectively , compared to $ 189.0 million , $ 123.3 million and $ 60.2 million in 2017 , respectively . revenues in the european geography were positively impacted by fluctuations in foreign currency exchange rates with the u.s. dollar , particularly the euro and the british pound , during 2018 compared to the same period in the prior year . during 2018 , revenues in the cis geography increased $ 13.3 million , or 19.5 % , from the previous year . the increase in cis revenues came predominantly from customers in russia , contributing $ 10.0 million of revenue growth in 2018 compared to the previous year . the revenues in the cis geography were negatively affected by currency fluctuations , primarily russian rubles , decreasing year-over-year growth of reported revenues in this geography by 9.7 % in 2018. revenues from customers in locations in the apac region comprised 2.8 % of total revenues in 2018 , a level consistent with the prior year . 2017 compared to 2016 during the year ended december 31 , 2017 , revenues in our largest geography , north america , were $ 840.7 million growing $ 170.1 million , or 25.4 % , from $ 670.6 million reported for the year ended december 31 , 2016. revenues from this geography accounted for 58.0 % of total revenues in 2017 , a level consistent with the prior year . within north america , we experienced strong growth across all verticals with the business information & media vertical contributing 31.7 % of total growth in the north america geography . in addition , our traditionally strong software & hi-tech portfolio grew 19.6 % year over year . we saw continued growth in emerging verticals with 44.2 % growth in revenues with 29.7 % of the growth coming from customers who have been with us less than one year . revenues in our europe geography were $ 511.3 million , an increase of $ 93.5 million , or 22.4 % over $ 417.8 million in the prior year . revenues in this geography accounted for 35.2 % of consolidated revenues in 2017 as compared to 36.0 % in the prior year . europe experienced strong growth in the business information & media , life sciences & healthcare , and emerging verticals , each of which grew over 55 % during 2017. over 70 % of the growth in our europe geography in 2017 came from customers who have been with us less than two years . financial services remained our largest vertical in this geography accounting for 41.1 % of the europe geography 's revenues in 2017 as compared to 47.7 % in 2016. revenues in the cis geography increased $ 22.3 million , or 48.3 % , from last year . the increase in cis revenues came predominantly from customers within the financial services and emerging verticals . revenues in this geography benefited by $ 5.9 million from the appreciation of the russian ruble relative to the u.s. dollar . revenues by customer concentration we have long-standing relationships with many of our customers and we seek to grow revenues from our existing customers by continually expanding the scope and size of our engagements . revenues derived from these customers may fluctuate as these accounts mature or upon completion of multi-year projects . while we believe there is a significant potential for future growth as we expand our capabilities and offerings within existing customers , we continue to focus on diversification of our customer concentration and building up a portfolio of new accounts that we believe have significant revenue potential . we anticipate the contribution of these new accounts to our total revenues to increase in the mid- to long-term and offset the potential slower growth rate of some of our largest customers as those accounts mature . 34 we expect customer concentration from our top customers to continue to decrease over the long-term . the following table presents revenues contributed by our customers by amount and as a percentage of our revenues for the periods indicated : replace_table_token_10_th ( 1 ) no single customer comprises more than 10

cash flows the following table summarizes our cash flows for the periods indicated : replace_table_token_17_th 43 operating activities 2018 compared to 2017 net cash provided by operating activities during the year ended december 31 , 2018 increased $ 99.4 million , or 51.5 % , to $ 292.2 million , as compared to 2017 primarily driven by the $ 167.5 million increase in net income and 8 day improvement in days sales outstanding partially offset by the payout of a higher level of variable compensation related to 2017 performance and a non-cash increase in net deferred tax assets of $ 26.0 million as a result of our decision to change the tax status and to classify most of our foreign subsidiaries as disregarded for u.s. income tax purposes . 2017 compared to 2016 net cash provided by operating activities during the year ended december 31 , 2017 increased $ 25.6 million , or 15.3 % , to $ 192.8 million , as compared to 2016 primarily driven by the $ 39.3 million increase in income from operations . the $ 74.3 million increase in the provision for income taxes had minimal impact on cash flow as it was offset by a $ 70.5 million increase in taxes payable primarily attributable to the u.s. tax act , which are expected to be paid over the next 8 years . investing activities 2018 compared to 2017 net cash used in investing activities during the year ended december 31 , 2018 was $ 112.1 million compared to $ 36.2 million used in the same period in 2017 . during 2018 , the increase in cash used in investing activities was primarily attributable to the net $ 74.3 million cash used to acquire continuum innovation llc and think limited and an increase in capital expenditures of $ 7.8 million compared to the same period last year .


 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.
     ```cash flows the following table summarizes our cash flows for the periods indicated : replace_table_token_17_th 43 operating activities 2018 compared to 2017 net cash provided by operating activities during the year ended december 31 , 2018 increased $ 99.4 million , or 51.5 % , to $ 292.2 million , as compared to 2017 primarily driven by the $ 167.5 million increase in net income and 8 day improvement in days sales outstanding partially offset by the payout of a higher level of variable compensation related to 2017 performance and a non-cash increase in net deferred tax assets of $ 26.0 million as a result of our decision to change the tax status and to classify most of our foreign subsidiaries as disregarded for u.s. income tax purposes . 2017 compared to 2016 net cash provided by operating activities during the year ended december 31 , 2017 increased $ 25.6 million , or 15.3 % , to $ 192.8 million , as compared to 2016 primarily driven by the $ 39.3 million increase in income from operations . the $ 74.3 million increase in the provision for income taxes had minimal impact on cash flow as it was offset by a $ 70.5 million increase in taxes payable primarily attributable to the u.s. tax act , which are expected to be paid over the next 8 years . investing activities 2018 compared to 2017 net cash used in investing activities during the year ended december 31 , 2018 was $ 112.1 million compared to $ 36.2 million used in the same period in 2017 . during 2018 , the increase in cash used in investing activities was primarily attributable to the net $ 74.3 million cash used to acquire continuum innovation llc and think limited and an increase in capital expenditures of $ 7.8 million compared to the same period last year .
```    
 Suspicious Activity Report : million charge related to u.s. tax reform . net income increased 230.2 % to $ 240.3 million compared to $ 72.8 million in 2017 . expressed as a percentage of revenues , net income increased 8.0 % compared to last year , which was largely driven by the improved effective tax rate as well as the improvement in income from operations as a percentage of revenues . diluted earnings per share increased 221.2 % to $ 4.24 for the year ended december 31 , 2018 from $ 1.32 in 2017 . cash provided by operations increased $ 99.4 million , or 51.5 % , to $ 292.2 million during 2018 as compared to last year . the operating results in any period are not necessarily indicative of the results that may be expected for any future period . 27 critical accounting policies we prepare our consolidated financial statements in accordance with u.s. generally accepted accounting principles ( “ gaap ” ) , which require us to make judgments , estimates and assumptions that affect : ( i ) the reported amounts of assets and liabilities , ( ii ) the disclosure of contingent assets and liabilities at the end of each reporting period and ( iii ) the reported amounts of revenues and expenses during each reporting period . we evaluate these estimates and assumptions based on historical experience , knowledge and assessment of current business and other conditions , and expectations regarding the future based on available information and reasonable assumptions , which together form a basis for making judgments about matters not readily apparent from other sources . since the use of estimates is an integral component of the financial reporting process , actual results could differ from those estimates . some of our accounting policies require higher degrees of judgment than others in their application . when reviewing our audited consolidated financial statements , you should consider ( i ) our selection of critical accounting policies , ( ii ) the judgment and other uncertainties affecting the application of such policies and ( iii ) the sensitivity of reported results to changes in conditions and assumptions . we consider the policies discussed below to be critical to an understanding of our consolidated financial statements as their application places significant demands on the judgment of our management . an accounting policy is considered critical if it requires an accounting estimate to be made based on assumptions about matters that are highly uncertain at the time the estimate is made , and if different estimates that reasonably could have been used , or changes in the accounting estimates that are reasonably likely to occur periodically , could materially impact the consolidated financial statements . we believe that the following critical accounting policies are the most sensitive and require more significant estimates and assumptions used in the preparation of our consolidated financial statements . you should read the following descriptions of critical accounting policies , judgments and estimates in conjunction with our audited consolidated financial statements and other disclosures included elsewhere in this annual report . revenues — as discussed in note 1 “ business and summary of significant accounting policies ” in the notes to our consolidated financial statements in this annual report on form 10-k , we adopted the new accounting standard asu 2014-09 , “ revenue from contracts with customers ” ( topic 606 ) as amended using the modified retrospective method . this resulted in different revenue recognition accounting policies applied to the years presented in our consolidated financial statements . for the year ended december 31 , 2018 we recognize revenues when control of goods or services is passed to a customer in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services . such control may be transferred over time or at a point in time depending on satisfaction of obligations stipulated by the contract . consideration expected to be received may consist of both fixed and variable components and is allocated to each separately identifiable performance obligation based on the performance obligation 's relative standalone selling price . variable consideration usually takes the form of volume-based discounts , service level credits , price concessions or incentives . determining the estimated amount of such variable consideration involves assumptions and judgment that can have an impact on the amount of revenues reported . we derive revenues from a variety of service arrangements , which have been evolving to provide more customized and integrated solutions to customers by combining software engineering with customer experience design , business consulting and technology innovation services . fees for these contracts may be in the form of time-and-materials or fixed-price arrangements . we generate the majority of our revenues under time-and-material contracts , which are billed using hourly , daily or monthly rates to determine the amounts to be charged directly to the customer . we apply a practical expedient and revenues related to time-and-material contracts are recognized based on the right to invoice for services performed . fixed-price contracts include maintenance and support arrangements , which may exceed one year in duration . maintenance and support arrangements generally relate to the provision of ongoing services and revenues for such contracts are recognized ratably over the expected service period . fixed-price contracts also include application development arrangements , where progress towards satisfaction of the performance obligation is measured using input or output methods and input methods are used only when there is a direct correlation between hours incurred and the end product delivered . assumptions , risks and uncertainties inherent in the estimates used to measure progress could affect the amount of revenues , receivables and deferred revenues at each reporting period . revenues from licenses which have significant stand-alone functionality are recognized at a point in time when control of the license is transferred to the customer . story_separator_special_tag revenues by customer location is different from revenues by reportable segment in our consolidated financial statements included elsewhere in this annual report . segments are not based on the geographic location of the customers , but instead they are based on the location of the company 's management responsible for a particular customer or market . the following table sets forth revenues by customer location by amount and as a percentage of our revenues for the periods indicated : replace_table_token_9_th ( 1 ) cis includes revenues from customers in belarus , kazakhstan , russia and ukraine . ( 2 ) apac , which stands for asia pacific , includes revenues from customers in southeast asia and australia . 2018 compared to 2017 during the year ended december 31 , 2018 , revenues in our largest geography , north america , were $ 1,099.2 million growing $ 258.5 million , or 30.7 % , from $ 840.7 million reported for the year ended december 31 , 2017 . revenues from this geography accounted for 59.6 % of total revenues in 2018 , an increase from 58.0 % in the prior year . the united states continued to be our largest customer location contributing revenues of $ 1,029.3 million in 2018 compared to $ 783.6 million in 2017 . 33 revenues in our europe geography were $ 612.5 million , an increase of $ 101.2 million , or 19.8 % , over $ 511.3 million in the previous year . revenues in this geography accounted for 33.2 % of consolidated revenues in 2018 as compared to 35.2 % in the previous year . the top three revenue contributing customer location countries in europe were the united kingdom , switzerland and germany generating revenues of $ 200.9 million , $ 144.4 million and $ 80.8 million in 2018 , respectively , compared to $ 189.0 million , $ 123.3 million and $ 60.2 million in 2017 , respectively . revenues in the european geography were positively impacted by fluctuations in foreign currency exchange rates with the u.s. dollar , particularly the euro and the british pound , during 2018 compared to the same period in the prior year . during 2018 , revenues in the cis geography increased $ 13.3 million , or 19.5 % , from the previous year . the increase in cis revenues came predominantly from customers in russia , contributing $ 10.0 million of revenue growth in 2018 compared to the previous year . the revenues in the cis geography were negatively affected by currency fluctuations , primarily russian rubles , decreasing year-over-year growth of reported revenues in this geography by 9.7 % in 2018. revenues from customers in locations in the apac region comprised 2.8 % of total revenues in 2018 , a level consistent with the prior year . 2017 compared to 2016 during the year ended december 31 , 2017 , revenues in our largest geography , north america , were $ 840.7 million growing $ 170.1 million , or 25.4 % , from $ 670.6 million reported for the year ended december 31 , 2016. revenues from this geography accounted for 58.0 % of total revenues in 2017 , a level consistent with the prior year . within north america , we experienced strong growth across all verticals with the business information & media vertical contributing 31.7 % of total growth in the north america geography . in addition , our traditionally strong software & hi-tech portfolio grew 19.6 % year over year . we saw continued growth in emerging verticals with 44.2 % growth in revenues with 29.7 % of the growth coming from customers who have been with us less than one year . revenues in our europe geography were $ 511.3 million , an increase of $ 93.5 million , or 22.4 % over $ 417.8 million in the prior year . revenues in this geography accounted for 35.2 % of consolidated revenues in 2017 as compared to 36.0 % in the prior year . europe experienced strong growth in the business information & media , life sciences & healthcare , and emerging verticals , each of which grew over 55 % during 2017. over 70 % of the growth in our europe geography in 2017 came from customers who have been with us less than two years . financial services remained our largest vertical in this geography accounting for 41.1 % of the europe geography 's revenues in 2017 as compared to 47.7 % in 2016. revenues in the cis geography increased $ 22.3 million , or 48.3 % , from last year . the increase in cis revenues came predominantly from customers within the financial services and emerging verticals . revenues in this geography benefited by $ 5.9 million from the appreciation of the russian ruble relative to the u.s. dollar . revenues by customer concentration we have long-standing relationships with many of our customers and we seek to grow revenues from our existing customers by continually expanding the scope and size of our engagements . revenues derived from these customers may fluctuate as these accounts mature or upon completion of multi-year projects . while we believe there is a significant potential for future growth as we expand our capabilities and offerings within existing customers , we continue to focus on diversification of our customer concentration and building up a portfolio of new accounts that we believe have significant revenue potential . we anticipate the contribution of these new accounts to our total revenues to increase in the mid- to long-term and offset the potential slower growth rate of some of our largest customers as those accounts mature . 34 we expect customer concentration from our top customers to continue to decrease over the long-term . the following table presents revenues contributed by our customers by amount and as a percentage of our revenues for the periods indicated : replace_table_token_10_th ( 1 ) no single customer comprises more than 10

