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 2 | Tigers | 11 - 1 | Galarraga (2-1) | 33628.0 | 14-14 |
| May 3 | Tigers | 4 - 1 | Verlander (1-5) | 28985.0 | 15-14 |
| May 4 | Tigers | 7 - 6 | Miner (1-2) | 29821.0 | 16-14 |
| May 6 | @ White Sox | 7 - 1 | Blackburn (2-2) | 23480.0 | 16-15 |
| May 7 | @ White Sox | 13 - 1 | Buehrle (1-4) | 21092.0 | 17-15 |
| May 8 | @ White Sox | 6 - 2 | Slowey (0-2) | 25193.0 | 17-16 |
| May 9 | Red Sox | 7 - 6 | Papelbon (2-2) | 25477.0 | 18-16 |
| May 10 | Red Sox | 5 - 2 | Perkins (0-1) | 33839.0 | 18-17 |
| May 11 | Red Sox | 9 - 8 | Wakefield (3-2) | 26511.0 | 19-17 |
| May 12 | Red Sox | 7 - 3 | Bucholz (2-3) | 18782.0 | 20-17 |
| May 13 | Blue Jays | 5 - 3 | Slowey (0-3) | 18110.0 | 20-18 |
| May 14 | Blue Jays | 6 - 5 | Bonser (2-5) | 21026.0 | 20-19 |
| May 15 | Blue Jays | 3 - 2 (11) | Crain (1-2) | 18701.0 | 20-20 |
| May 16 | @ Rockies | 4 - 2 | Jiménez (1-4) | 35336.0 | 21-20 |
| May 17 | @ Rockies | 3 - 2 | Hernández (6-2) | 43149.0 | 21-21 |
| May 18 | @ Rockies | 6 - 2 | Slowey (0-4) | 40326.0 | 21-22 |
| May 19 | Rangers | 7 - 6 (12) | Germán (1-3) | 16680.0 | 22-22 |
| May 20 | Rangers | 11 - 4 | Mathis (1-1) | 19376.0 | 23-22 |
| May 21 | Rangers | 10 - 1 | Blackburn (4-3) | 22032.0 | 23-23 |
| May 22 | Rangers | 8 - 7 (10) | Bass (1-1) | 23126.0 | 23-24 |
| May 23 | @ Tigers | 9 - 4 | Galarraga (3-2) | 40732.0 | 24-24 |
| May 24 | @ Tigers | 19 - 3 | Bonser (2-6) | 41137.0 | 24-25 |
| May 25 | @ Tigers | 6 - 1 | Cruceta (0-2) | 42413.0 | 25-25 |
| May 27 | @ Royals | 4 - 3 (12) | Núñez (3-1) | 17191.0 | 26-25 |
| May 28 | @ Royals | 9 - 8 (10) | Peralta (0-2) | 13621.0 | 27-25 |
| May 29 | @ Royals | 5 - 1 | Hochevar (3-5) | 12336.0 | 28-25 |
| May 30 | Yankees | 6 - 5 | Perkins (2-2) | 30188.0 | 28-26 |
| May 31 | Yankees | 7 - 6 (12) | Rincón (2-2) | 36441.0 | 28-27 |
Question:
What's greatest attendance on May 7?
Answer:
21092.0