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:
| Season | Average Attendance Home | Highest Attendance Home | Average Attendance Away | Highest Attendance Away | Division / Section | Level | Average Attendance League |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2002.0 | 7.546 | 11.902 vs. Helsingborgs IF | 9.924 | 24.570 vs. Malmö FF | Allsvenskan | Tier 1 | 10.180 |
| 2003.0 | 6.436 | 11.375 vs. Malmö FF | 8.728 | 23.081 vs. Malmö FF | Allsvenskan | Tier 1 | 10.208 |
| 2004.0 | 5.881 | 11.036 vs. Helsingborg | 8.526 | 18.824 vs. Malmö FF | Allsvenskan | Tier 1 | 9.768 |
| 2005.0 | 5.660 | 9.649 vs. Malmö FF | 6.762 | 15.047 vs. Helsingborg | Allsvenskan | Tier 1 | 8.691 |
| 2006.0 | 3.192 | 4.290 vs. Jönköpings S IF | 2.027 | 4.517 vs. IFK Norrköping | Superettan | Tier 2 | 2.105 |
| 2007.0 | 2.972 | 4.199 vs. Enköpings SK | 2.579 | 7.193 vs. IFK Norrköping | Superettan | Tier 2 | 2.450 |
| 2008.0 | 2.752 | 3.873 vs. Enköpings SK | 1.846 | 4.569 vs. LB07 | Superettan | Tier 2 | 1.557 |
| 2009.0 | 2.307 | 3.036 vs. Ängelholms FF | 1.889 | 3.596 vs. GIF Sundsvall | Superettan | Tier 2 | 1.880 |
| 2010.0 | 3.123 | 4.467 vs. Degerfors IF | 2.251 | 5.239 vs. Hammarby IF | Superettan | Tier 2 | 2.572 |
| 2011.0 | 2.929 | 4.040 vs. IFK Värnamo | 2.664 | 12.081 vs. Hammarby IF | Superettan | Tier 2 | 2.423 |
| 2012.0 | 2.459 | 3.450 vs. Hammarby IF | 2.119 | 6.802 vs. Hammarby IF | Superettan | Tier 2 | 2.456 |
Question:
In which season was the average league attendance 2.572?
Answer:
2010.0