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:
| Week | Date | Opponent | Result | Attendance |
| --- | --- | --- | --- | --- |
| 1.0 | September 11, 1965 | at Buffalo Bills | L 24-7 | 45,502 |
| 2.0 | September 19, 1965 | at Houston Oilers | L 31-10 | 32,445 |
| 3.0 | September 24, 1965 | Denver Broncos | L 27-10 | 26,782 |
| 4.0 | October 3, 1965 | at Kansas City Chiefs | L 27-17 | 26,773 |
| 5.0 | October 8, 1965 | Oakland Raiders | L 24-10 | 24,824 |
| 6.0 | October 17, 1965 | San Diego Chargers | T 13-13 | 20,924 |
| 7.0 | October 24, 1965 | at Oakland Raiders | L 30-21 | 20,858 |
| 8.0 | October 31, 1965 | at San Diego Chargers | W 22–6 | 33,366 |
| 9.0 | November 7, 1965 | Buffalo Bills | L 23-7 | 24,415 |
| 10.0 | November 14, 1965 | New York Jets | L 30-20 | 18,589 |
| 11.0 | November 21, 1965 | Kansas City Chiefs | T 10-10 | 13,056 |
| 12.0 | November 28, 1965 | at New York Jets | W 27-23 | 59,334 |
| 13.0 | Bye | Bye | Bye | Bye |
| 14.0 | December 12, 1965 | at Denver Broncos | W 28-20 | 27,207 |
| 15.0 | December 18, 1965 | Houston Oilers | W 42–14 | 14,508 |
Question:
What was the last week when the team had a bye week?
Answer:
13.0