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:
| Date | Opponent | Score | Loss | Attendance | Record |
| --- | --- | --- | --- | --- | --- |
| May 1 | @ Mariners | 9 - 3 | Moyer (1-4) | 35628.0 | 14-11 |
| May 2 | @ Mariners | 3 - 2 | Plesac (0-2) | 31355.0 | 14-12 |
| May 3 | @ Mariners | 16 - 10 | García (3-1) | 22304.0 | 15-12 |
| May 4 | Athletics | 13 - 4 | Halladay (2-2) | 20258.0 | 15-13 |
| May 5 | Athletics | 8 - 2 | Escobar (2-1) | 20314.0 | 15-14 |
| May 6 | Athletics | 3 - 2 | Carpenter (3-2) | 20310.0 | 15-15 |
| May 7 | Rangers | 9 - 6 | Clark (2-3) | 22110.0 | 16-15 |
| May 8 | Rangers | 4 - 3 | Wells (4-2) | 24642.0 | 16-16 |
| May 9 | Rangers | 11 - 6 | Munro (0-1) | 20374.0 | 16-17 |
| May 11 | @ Royals | 8 - 2 | Pittsley (1-2) | 12141.0 | 17-17 |
| May 12 | @ Royals | 7 - 1 | Carpenter (3-3) | 13073.0 | 17-18 |
| May 13 | @ Royals | 8 - 2 | Rosado (2-2) | 19573.0 | 18-18 |
| May 14 | Red Sox | 5 - 0 | Wells (4-3) | 22186.0 | 18-19 |
| May 15 | Red Sox | 6 - 5 | Plesac (0-3) | 24579.0 | 18-20 |
| May 16 | Red Sox | 9 - 6 | Gross (0-2) | 21094.0 | 19-20 |
| May 17 | Red Sox | 8 - 7 | Lloyd (3-2) | 20395.0 | 19-21 |
| May 18 | Tigers | 7 - 5 | Thompson (4-5) | 20310.0 | 20-21 |
| May 19 | Tigers | 7 - 3 | Wells (4-4) | 20384.0 | 20-22 |
| May 20 | Tigers | 7 - 0 | Mlicki (1-4) | 21137.0 | 21-22 |
| May 21 | @ Red Sox | 5 - 2 | Escobar (3-2) | 27284.0 | 21-23 |
| May 22 | @ Red Sox | 6 - 4 | Carpenter (3-4) | 32038.0 | 21-24 |
| May 23 | @ Red Sox | 10 - 8 | Hentgen (4-2) | 28559.0 | 21-25 |
| May 24 | @ Tigers | 12 - 6 | Moehler (4-4) | 13038.0 | 22-25 |
| May 25 | @ Tigers | 5 - 3 | Mlicki (1-5) | 13087.0 | 23-25 |
| May 26 | @ Tigers | 9 - 5 | Blair (1-5) | 14177.0 | 24-25 |
| May 28 | Yankees | 10 - 6 | Carpenter (3-5) | 30355.0 | 24-26 |
| May 29 | Yankees | 8 - 3 | Hentgen (4-3) | 40175.0 | 24-27 |
| May 30 | Yankees | 8 - 3 | Wells (5-5) | 39111.0 | 24-28 |
Question:
What was the average attendance when the record was 17-18?
Answer:
13073.0