Table:
|  |  |  | Year Ended December 31, |  |  |
| --- | --- | --- | --- | --- | --- |
|  | 2019 | 2018 | 2017 | 2016 | 2015 |
|  |  |  | (in millions, except per share data) |  |  |
| Consolidated Statements of Income Data: |  |  |  |  |  |
| Revenue | $70,697 | $55,838 | $40,653 | $27,638 | $17,928 |
| Total costs and expenses(1) | $46,711 | $30,925 | $20,450 | $15,211 | $11,703 |
| Income from operations | $23,986 | $24,913 | $20,203 | $12,427 | $6,225 |
| Income before provision for income taxes | $24,812 | $25,361 | $20,594 | $12,518 | $6,194 |
| Net income | $18,485 | $22,112 | $15,934 | $10,217 | $3,688 |
| Net income attributable to Class A and Class B common stockholders | $18,485 | $22,111 | $15,920 | $10,188 | $3,669 |
| Earnings per share attributable to Class A and Class B common stockholders: |  |  |  |  |  |
| Basic | $6.48 | $7.65 | $5.49 | $3.56 | $1.31 |
| Diluted | $6.43 | $7.57 | $5.39 | $3.49 | $1.29 |
Paragraphs:
Item 6. Selected Financial Data
You should read the following selected consolidated financial data in conjunction with Part II, Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations," and our consolidated financial statements and the related notes included in Part II, Item 8, "Financial Statements and Supplementary Data" of this Annual Report on Form 10-K.
The consolidated statements of income data for each of the years ended December 31, 2019, 2018, and 2017 and the consolidated balance sheets data as of December 31, 2019 and 2018 are derived from our audited consolidated financial statements included in Part II, Item 8, "Financial Statements and Supplementary Data" of this Annual Report on Form 10-K. The consolidated statements of income data for the years ended December 31, 2016 and 2015 and the consolidated balance sheets data as of December 31, 2017, 2016, and 2015 are derived from our audited consolidated financial statements, except as otherwise noted, that are not included in this Annual Report on Form 10-K. Our historical results are not necessarily indicative of our results in any future period.
(1) Total costs and expenses include 4,840 million, 4,150 million, 3,720 million, 3,220 million, and 2,970 million of share-based compensation for the years ended December 31, 2019, 2018, 2017, 2016, and 2015, respectively.
Question:
What is the average revenue for 2018 and 2019?
Answer: (70697+ 55838)/2 = 63267.5