pre_text: Item 6. Selected Financial Data We have derived the consolidated statement of operations data for the years ended December 31, 2019, 2018 and 2017 and the selected consolidated balance sheet data as of December 31, 2019 and 2018 from our audited consolidated financial statements that are included in this Form 10-K. The following selected consolidated statement of operations data for the years ended December 31, 2016 and 2015 and the selected consolidated balance sheet data as of December 31, 2017, 2016 and 2015 are derived from our audited consolidated financial statements that are not included in this report Our historical operating results are not necessarily indicative of future operating results, these selected consolidated financial data should be read in conjunction with the consolidated financial statements and accompanying notes in Part II, Item 8, and Management’s Discussion and Analysis of Financial Condition and Results of Operations in Part II, Item 7 included in this report The amounts as of and for the years ended December 31, 2019 and 2018 have been prepared based on our adoption of Accounting Standards Codification (‘‘ASC’’) No. 606, Contracts with Customers. We elected to adopt this accounting standard on a modified retrospective basis which resulted in the impact of adoption being recorded as of January 1, 2018. The amounts in all other years, other than 2019 and 2018, in the tables below have been prepared on the previously outstanding guidance on revenue recognition. We have disclosed the ASC 606 adoption impact on our revenue recognition in Note 2 of the audited consolidated financial statements included in Part II, Item 8 of this report The amounts as of and for the years ended December 31, 2019 and 2018 have been prepared based on our adoption of Accounting Standards Codification (‘‘ASC’’) No. 606, Contracts with Customers. We elected to adopt this accounting standard on a modified retrospective basis which resulted in the impact of adoption being recorded as of January 1, 2018. The amounts in all other years, other than 2019 and 2018, in the tables below have been prepared on the previously outstanding guidance on revenue recognition. We have disclosed the ASC 606 adoption impact on our revenue recognition in Note 2 of the audited consolidated financial statements included in Part II, Item 8 of this report
table: Years Ended December 31,
table: (in thousands, except per share amounts) 2019 2018 2017 2016 2015
table: Consolidated Statement of Operations Data
table: Revenue $212,628 $232,223 $235,429 $227,297 $196,285
table: Cost of revenue $48,881 $51,896 $53,318 $54,413 $48,402
table: Gross profit $163,747 $180,327 $182,111 $172,884 $147,883
table: Loss from operations $(17,094) $(27,679) $(10,372) $(20,570) $(40,309)
table: Net loss $(17,819) $(27,617) $(10,751) $(22,391) $(41,897)
table: Net loss per share: basic and diluted $(0.23) $(0.38) $(0.15) $(0.34) $(0.67)
table: Weighted-average shares used in computing net
table: loss per share: basic and diluted 76,080 72,882 70,053 65,701 62,428
table: Consolidated Balance Sheet Data:
table: Cash,cash equivalents and marketable securities $129,922 $128,375 $131,134 $114,347 $98,117
table: Working capital $123,358 $117,572 $111,076 $95,285 $89,550
table: Total assets $274,053 $235,876 $224,858 $216,733 $189,892
table: Deferred revenue(current and non-current) $101,164 $97,966 $94,637 $91,617 $72,008
table: Total stockholders’ equity $108,787 $103,883 $98,386 $82,752 $78,205
question: Analyse this data from a financial earnings document. What is the total revenue earned by the company between 2015 to 2019?