Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
|  | Year Ended December 31, | Year Ended December 31, | Increase | % Increase |
| --- | --- | --- | --- | --- |
|  | 2017 | 2016 |  |  |
| Passenger | $34,819 | $33,777 | 1,042 | 3.1% |
| Cargo | 729 | 668 | 61 | 9.1% |
| Other | 5,696 | 5,194 | 502 | 9.7% |
| Total | $41,244 | $39,639 | $1,605 | 4.0% |
Question:
What was the total operating revenue for Delta airlines in 2016 ?
Answer:
$39,639