due to the price volatility of fuel products we buy and our pricing to fuel customers , we believe that fuel revenue is not a reliable metric for analyzing our results of operations from period to period . as a result solely of changes in fuel prices , our fuel revenue may materially increase or decrease , in both absolute amounts and on a percentage basis , without a comparable change in fuel sales volumes or in fuel gross margin . we therefore consider fuel volume and fuel gross margin to be better measures of comparative performance . we generally are able to pass changes in our cost for fuel products to customers , but typically with a delay , such that during periods of rising fuel commodity prices fuel gross margins per gallon tend to be lower than they otherwise may have been and during periods of falling fuel commodity prices fuel gross margins per gallon tend to be higher than they otherwise may have been . increases and volatility in the prices we pay for fuel can have negative effects on our sales and profitability and increase our working capital requirements . for more information about fuel market risks that may affect us and our actions to mitigate those risks , see item 7a , `` quantitative and qualitative disclosures about market risk `` elsewhere in this annual report . 34 we believe that demand for fuel by trucking companies will tend to be reduced over time for any given level of economic activity by technological innovations that permit , and regulatory changes that encourage , require or give rise to , improved fuel efficiency of motor vehicle engines and other fuel conservation practices . we believe these factors were significant contributors to the modest increases in the level of fuel sales volumes we realized on a same site basis for 2015 , as compared to 2014 , despite generally improving economic conditions during 2015 . fuel volumes primarily increased in 2015 as a result of locations acquired during 2014 and 2015 . our fuel gross margins in 2015 were lower than those in 2014 , principally because the decline in fuel prices during 2014 was more rapid and acute than the decline in fuel prices in 2015 . generally , declining fuel costs are not immediately reflected in fuel retail prices , and such a condition often increases our fuel gross margins . in addition , supply conditions in 2014 were generally more favorable than those in 2015 , which also contributed to the higher gross margin in 2014 . the decrease in our net income for 2015 , as compared to 2014 , was primarily due to decreases in fuel gross margin , as noted above , increases in expenses resulting from our acquisitions and the 2015 loss on extinguishment of debt , as further described below under `` transaction agreement with hpt `` . these decreases were partially offset by an increase in nonfuel gross margin . factors affecting comparability transaction agreement with hpt in june 2015 we entered into a transaction agreement , or the transaction agreement , with our principal landlord , hpt , pursuant to which among other things , ( i ) we and hpt amended and restated the ta lease pursuant to which we then leased 144 properties from hpt into four leases , with initial lease terms ending in 2026 , 2028 , 2029 and 2030 and each subject to two 15 year renewal periods at our option ( these four leases are collectively referred to herein as the `` new ta leases `` ) , ( ii ) we sold to hpt 14 travel centers owned by us and certain assets we owned at 11 properties that we leased from hpt and leased back these properties and assets from hpt , ( iii ) we purchased from hpt five travel centers that we then leased from hpt and ( iv ) we agreed to sell to hpt five travel centers upon the completion of their development , which is expected to be completed before june 30 , 2017 , at a purchase price equal to their development costs , including the cost of the land , which costs are estimated to be not more than $ 118,000 in the aggregate , and we agreed to lease back these development properties . during the year ended december 31 , 2015 , we received proceeds of $ 279,383 from the aforementioned sale to hpt of 14 owned travel centers and certain assets at 11 properties currently leased from hpt and purchased the five above referenced travel centers from hpt for $ 45,042 . the sale of these travel centers and assets generated an aggregate gain of $ 133,668 , which was deferred and will be amortized as a reduction of our rent expense over the terms of the new ta leases . the purchase of the five travel centers resulted in a loss on extinguishment of debt of $ 10,502 . the loss on extinguishment of debt arose because the lease of these properties had been accounted for as a financing and the purchase prices paid for the properties exceeded the unamortized balance of the sale leaseback financing obligation . as of december 31 , 2015 , we leased from hpt a total of 153 properties under the new ta leases for total minimum annual rent of $ 190,745 . see note 12 to the notes to consolidated financial statements included in item 15 of this annual report for more information about this transaction with hpt . recently acquired sites since our acquisition program began in 2011 and through december 31 , 2015 , we have acquired 37 travel centers and 201 convenience stores . we invested $ 320,909 to acquire , renovate and upgrade these travel center properties and $ 388,308 to acquire , renovate and upgrade these convenience store properties . story_separator_special_tag fuel revenues for the 2014 period reflected decreases in market prices for fuel and same site sales volume , as compared to 2013 , which decreases were partially offset by increases in sales volume resulting from the locations we acquired during 2013 and 2014 . on a same site basis , fuel sales volume decreased by 84,499 gallons , or 4.3 % , during 2014 , as compared to 2013 . we believe that the effect of the truck driver hours of service rules on miles driven and truck utilization , the trend for improved fuel efficiency of heavy truck engines and other fuel conservation efforts by trucking customers and our decision to avoid certain lower margin fuel sales all contributed to the decreased same site fuel sales volume . nonfuel revenues for 2015 were $ 1,626,646 , an increase of $ 86,650 , or 5.6 % , from 2014 , primarily due to favorable results of our marketing initiatives and from the locations we acquired during 2014 and 2015 . on a same site basis , nonfuel revenues increased by $ 81,498 , or 5.4 % , for 2015 , as compared to 2014 . we believe this same site increase is primarily due to favorable effects of certain of our marketing initiatives . nonfuel revenues for 2014 were $ 1,539,996 , an increase of $ 97,281 , or 6.7 % , as compared to 2013 , as a result of certain price increases , the favorable effects of certain of our marketing initiatives and from locations we acquired during 2013 and 2014 . on a same site basis , nonfuel revenues increased by 4.1 % for 2014 , as compared to 2013 . we believe this same site increase is primarily due to the improved results at those sites we acquired during 2011 and 2012 , as well as certain price increases and the favorable effects of certain of our marketing initiatives . site level gross margin in excess of site level operating expenses . site level gross margin in excess of site level operating expenses for 2015 was $ 483,009 , a decrease of $ 9,609 , or 2.0 % , from 2014 . the decrease was primarily due to decreases in fuel gross margin and increases in site level operating expenses , partially offset by increases in nonfuel gross margin . fuel gross margin decreased $ 33,009 , or 7.8 % , for 2015 , as compared to 2014 . the fuel gross margin per gallon of $ 0.196 on a same site basis for 2015 , was $ 0.018 per gallon lower than 2014 . lower fuel margin per gallon for 2015 primarily resulted from a favorable purchasing experience in 2014 that did not recur in 2015 . site level operating expenses increased $ 38,648 , or 4.9 % , during 2015 , as compared to 2014 , primarily due to the locations we acquired during 2014 and 2015 . these decreases were partially offset by an increase in nonfuel gross margin of $ 62,006 , or 7.3 % , for 2015 , as compared to 2014 . the nonfuel gross margin was 56.3 % and 55.4 % of nonfuel revenues in 2015 and 2014 , respectively . the nonfuel gross margin percentage increased due to a favorable change in the mix of products and services sold . on a same site basis , the nonfuel gross margin percentage improved to 56.4 % from 55.5 % . site level gross margin in excess of site level operating expenses for 2014 was $ 492,618 , an increase of $ 99,113 , or 25.2 % , from 2013 . the increase was primarily due to the increases in fuel and nonfuel gross margin , partially offset by increases in site level operating expenses . fuel gross margin increased $ 80,333 , or 23.6 % , for 2014 , as compared to 2013 . the fuel gross margin per gallon of $ 0.213 on a same site basis for 2014 , was $ 0.041 per gallon higher than 2013 . higher fuel margin per gallon in 2014 primarily resulted from a favorable purchasing experience in 2014 . nonfuel gross margin increased $ 59,723 , or 7.5 % , for 2014 , as compared to 2013 . the nonfuel gross margin was 55.4 % and 55.0 % of nonfuel revenues in 2014 and 2013 , respectively . the nonfuel gross margin percentage increased due to a favorable change in the mix of products and services sold . on a same site basis , the nonfuel gross margin percentage improved to 55.6 % from 55.0 % . these increases were partially offset by higher site level operating expenses of $ 40,638 , or 5.4 % , for 2014 , as compared to 2013 , primarily due to the locations we acquired during 2013 and 2014 . 42 convenience stores the following table presents changes in the operating results of our convenience store segment for the year ended december 31 , 2015 , as compared with the year ended december 31 , 2014 . on december 16 , 2013 , we acquired 31 convenience store locations and as of december 31 , 2013 , we operated 34 convenience stores not located on a travel center property . the results of operations for these 31 locations for the period subsequent to acquisition did not have a significant impact on our consolidated results of operations for 2013 and our convenience store segment was not significant to our consolidated operating results for 2013 . therefore , the convenience store segment information for 2013 is not presented below . replace_table_token_13_th the following table presents our same site operating results for our convenience store segment for the year ended december 31 , 2015 , as compared to the year ended december 31 , 2014 . the table includes amounts for locations that were company operated during the entirety of each of the periods presented . replace_table_token_14_th

cash flow from operating activities in 2015 , we had net cash inflows from operating activities of $ 136,888 , a decrease of $ 24,237 compared to $ 161,125 in 2014 . the decrease was primarily due to lower net income partially offset by lower net working capital in 2015 as compared to 2014 , that resulted primarily from lower fuel prices . in 2014 , we had net cash inflows from operating activities of $ 161,125 , an increase of $ 89,612 compared to $ 71,513 in 2013 . the increase was primarily due to higher net income and lower net working capital resulting primarily from lower fuel prices , partially offset by a one time litigation settlement payment in 2014 , as compared to 2013 . in january 2014 , we reached a settlement with the plaintiffs in a long running litigation and made a $ 10,000 payment in march 2014 , which offset our increase in cash flow from operating activities . see legal proceedings included in part i , item 3 of this annual report for more information about this settlement . cash flow from investing activities in 2015 , we had cash outflows from investing activities of $ 237,477 , an increase of $ 103,059 compared to $ 134,418 in 2014 . the increase was primarily due to capital expenditures and cash invested for acquisitions , partially offset by proceeds from the sale of assets to hpt . in 2015 , we invested $ 320,290 for the acquisition of three travel centers and 170 convenience stores , and we made other capital investments of $ 295,437 for improvements to our properties . in 2015 , we received $ 378,250 of proceeds from our sales of properties and assets to hpt , including improvements to properties we lease from hpt . in 2014 , we had cash outflows from investing activities of $ 134,418 , a decrease of $ 61,621 compared to $ 196,039 in 2013 . the decrease was primarily due to fewer acquisitions in 2014 compared to 2013 .


 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 flow from operating activities in 2015 , we had net cash inflows from operating activities of $ 136,888 , a decrease of $ 24,237 compared to $ 161,125 in 2014 . the decrease was primarily due to lower net income partially offset by lower net working capital in 2015 as compared to 2014 , that resulted primarily from lower fuel prices . in 2014 , we had net cash inflows from operating activities of $ 161,125 , an increase of $ 89,612 compared to $ 71,513 in 2013 . the increase was primarily due to higher net income and lower net working capital resulting primarily from lower fuel prices , partially offset by a one time litigation settlement payment in 2014 , as compared to 2013 . in january 2014 , we reached a settlement with the plaintiffs in a long running litigation and made a $ 10,000 payment in march 2014 , which offset our increase in cash flow from operating activities . see legal proceedings included in part i , item 3 of this annual report for more information about this settlement . cash flow from investing activities in 2015 , we had cash outflows from investing activities of $ 237,477 , an increase of $ 103,059 compared to $ 134,418 in 2014 . the increase was primarily due to capital expenditures and cash invested for acquisitions , partially offset by proceeds from the sale of assets to hpt . in 2015 , we invested $ 320,290 for the acquisition of three travel centers and 170 convenience stores , and we made other capital investments of $ 295,437 for improvements to our properties . in 2015 , we received $ 378,250 of proceeds from our sales of properties and assets to hpt , including improvements to properties we lease from hpt . in 2014 , we had cash outflows from investing activities of $ 134,418 , a decrease of $ 61,621 compared to $ 196,039 in 2013 . the decrease was primarily due to fewer acquisitions in 2014 compared to 2013 .
```    
 Suspicious Activity Report : due to the price volatility of fuel products we buy and our pricing to fuel customers , we believe that fuel revenue is not a reliable metric for analyzing our results of operations from period to period . as a result solely of changes in fuel prices , our fuel revenue may materially increase or decrease , in both absolute amounts and on a percentage basis , without a comparable change in fuel sales volumes or in fuel gross margin . we therefore consider fuel volume and fuel gross margin to be better measures of comparative performance . we generally are able to pass changes in our cost for fuel products to customers , but typically with a delay , such that during periods of rising fuel commodity prices fuel gross margins per gallon tend to be lower than they otherwise may have been and during periods of falling fuel commodity prices fuel gross margins per gallon tend to be higher than they otherwise may have been . increases and volatility in the prices we pay for fuel can have negative effects on our sales and profitability and increase our working capital requirements . for more information about fuel market risks that may affect us and our actions to mitigate those risks , see item 7a , `` quantitative and qualitative disclosures about market risk `` elsewhere in this annual report . 34 we believe that demand for fuel by trucking companies will tend to be reduced over time for any given level of economic activity by technological innovations that permit , and regulatory changes that encourage , require or give rise to , improved fuel efficiency of motor vehicle engines and other fuel conservation practices . we believe these factors were significant contributors to the modest increases in the level of fuel sales volumes we realized on a same site basis for 2015 , as compared to 2014 , despite generally improving economic conditions during 2015 . fuel volumes primarily increased in 2015 as a result of locations acquired during 2014 and 2015 . our fuel gross margins in 2015 were lower than those in 2014 , principally because the decline in fuel prices during 2014 was more rapid and acute than the decline in fuel prices in 2015 . generally , declining fuel costs are not immediately reflected in fuel retail prices , and such a condition often increases our fuel gross margins . in addition , supply conditions in 2014 were generally more favorable than those in 2015 , which also contributed to the higher gross margin in 2014 . the decrease in our net income for 2015 , as compared to 2014 , was primarily due to decreases in fuel gross margin , as noted above , increases in expenses resulting from our acquisitions and the 2015 loss on extinguishment of debt , as further described below under `` transaction agreement with hpt `` . these decreases were partially offset by an increase in nonfuel gross margin . factors affecting comparability transaction agreement with hpt in june 2015 we entered into a transaction agreement , or the transaction agreement , with our principal landlord , hpt , pursuant to which among other things , ( i ) we and hpt amended and restated the ta lease pursuant to which we then leased 144 properties from hpt into four leases , with initial lease terms ending in 2026 , 2028 , 2029 and 2030 and each subject to two 15 year renewal periods at our option ( these four leases are collectively referred to herein as the `` new ta leases `` ) , ( ii ) we sold to hpt 14 travel centers owned by us and certain assets we owned at 11 properties that we leased from hpt and leased back these properties and assets from hpt , ( iii ) we purchased from hpt five travel centers that we then leased from hpt and ( iv ) we agreed to sell to hpt five travel centers upon the completion of their development , which is expected to be completed before june 30 , 2017 , at a purchase price equal to their development costs , including the cost of the land , which costs are estimated to be not more than $ 118,000 in the aggregate , and we agreed to lease back these development properties . during the year ended december 31 , 2015 , we received proceeds of $ 279,383 from the aforementioned sale to hpt of 14 owned travel centers and certain assets at 11 properties currently leased from hpt and purchased the five above referenced travel centers from hpt for $ 45,042 . the sale of these travel centers and assets generated an aggregate gain of $ 133,668 , which was deferred and will be amortized as a reduction of our rent expense over the terms of the new ta leases . the purchase of the five travel centers resulted in a loss on extinguishment of debt of $ 10,502 . the loss on extinguishment of debt arose because the lease of these properties had been accounted for as a financing and the purchase prices paid for the properties exceeded the unamortized balance of the sale leaseback financing obligation . as of december 31 , 2015 , we leased from hpt a total of 153 properties under the new ta leases for total minimum annual rent of $ 190,745 . see note 12 to the notes to consolidated financial statements included in item 15 of this annual report for more information about this transaction with hpt . recently acquired sites since our acquisition program began in 2011 and through december 31 , 2015 , we have acquired 37 travel centers and 201 convenience stores . we invested $ 320,909 to acquire , renovate and upgrade these travel center properties and $ 388,308 to acquire , renovate and upgrade these convenience store properties . story_separator_special_tag fuel revenues for the 2014 period reflected decreases in market prices for fuel and same site sales volume , as compared to 2013 , which decreases were partially offset by increases in sales volume resulting from the locations we acquired during 2013 and 2014 . on a same site basis , fuel sales volume decreased by 84,499 gallons , or 4.3 % , during 2014 , as compared to 2013 . we believe that the effect of the truck driver hours of service rules on miles driven and truck utilization , the trend for improved fuel efficiency of heavy truck engines and other fuel conservation efforts by trucking customers and our decision to avoid certain lower margin fuel sales all contributed to the decreased same site fuel sales volume . nonfuel revenues for 2015 were $ 1,626,646 , an increase of $ 86,650 , or 5.6 % , from 2014 , primarily due to favorable results of our marketing initiatives and from the locations we acquired during 2014 and 2015 . on a same site basis , nonfuel revenues increased by $ 81,498 , or 5.4 % , for 2015 , as compared to 2014 . we believe this same site increase is primarily due to favorable effects of certain of our marketing initiatives . nonfuel revenues for 2014 were $ 1,539,996 , an increase of $ 97,281 , or 6.7 % , as compared to 2013 , as a result of certain price increases , the favorable effects of certain of our marketing initiatives and from locations we acquired during 2013 and 2014 . on a same site basis , nonfuel revenues increased by 4.1 % for 2014 , as compared to 2013 . we believe this same site increase is primarily due to the improved results at those sites we acquired during 2011 and 2012 , as well as certain price increases and the favorable effects of certain of our marketing initiatives . site level gross margin in excess of site level operating expenses . site level gross margin in excess of site level operating expenses for 2015 was $ 483,009 , a decrease of $ 9,609 , or 2.0 % , from 2014 . the decrease was primarily due to decreases in fuel gross margin and increases in site level operating expenses , partially offset by increases in nonfuel gross margin . fuel gross margin decreased $ 33,009 , or 7.8 % , for 2015 , as compared to 2014 . the fuel gross margin per gallon of $ 0.196 on a same site basis for 2015 , was $ 0.018 per gallon lower than 2014 . lower fuel margin per gallon for 2015 primarily resulted from a favorable purchasing experience in 2014 that did not recur in 2015 . site level operating expenses increased $ 38,648 , or 4.9 % , during 2015 , as compared to 2014 , primarily due to the locations we acquired during 2014 and 2015 . these decreases were partially offset by an increase in nonfuel gross margin of $ 62,006 , or 7.3 % , for 2015 , as compared to 2014 . the nonfuel gross margin was 56.3 % and 55.4 % of nonfuel revenues in 2015 and 2014 , respectively . the nonfuel gross margin percentage increased due to a favorable change in the mix of products and services sold . on a same site basis , the nonfuel gross margin percentage improved to 56.4 % from 55.5 % . site level gross margin in excess of site level operating expenses for 2014 was $ 492,618 , an increase of $ 99,113 , or 25.2 % , from 2013 . the increase was primarily due to the increases in fuel and nonfuel gross margin , partially offset by increases in site level operating expenses . fuel gross margin increased $ 80,333 , or 23.6 % , for 2014 , as compared to 2013 . the fuel gross margin per gallon of $ 0.213 on a same site basis for 2014 , was $ 0.041 per gallon higher than 2013 . higher fuel margin per gallon in 2014 primarily resulted from a favorable purchasing experience in 2014 . nonfuel gross margin increased $ 59,723 , or 7.5 % , for 2014 , as compared to 2013 . the nonfuel gross margin was 55.4 % and 55.0 % of nonfuel revenues in 2014 and 2013 , respectively . the nonfuel gross margin percentage increased due to a favorable change in the mix of products and services sold . on a same site basis , the nonfuel gross margin percentage improved to 55.6 % from 55.0 % . these increases were partially offset by higher site level operating expenses of $ 40,638 , or 5.4 % , for 2014 , as compared to 2013 , primarily due to the locations we acquired during 2013 and 2014 . 42 convenience stores the following table presents changes in the operating results of our convenience store segment for the year ended december 31 , 2015 , as compared with the year ended december 31 , 2014 . on december 16 , 2013 , we acquired 31 convenience store locations and as of december 31 , 2013 , we operated 34 convenience stores not located on a travel center property . the results of operations for these 31 locations for the period subsequent to acquisition did not have a significant impact on our consolidated results of operations for 2013 and our convenience store segment was not significant to our consolidated operating results for 2013 . therefore , the convenience store segment information for 2013 is not presented below . replace_table_token_13_th the following table presents our same site operating results for our convenience store segment for the year ended december 31 , 2015 , as compared to the year ended december 31 , 2014 . the table includes amounts for locations that were company operated during the entirety of each of the periods presented . replace_table_token_14_th

