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:
| League | Sport | Country | Season | Games | Average attendance | Total attendance |
| --- | --- | --- | --- | --- | --- | --- |
| Major League Baseball | Baseball | USA/CAN | 2013 | 2426.0 | 30504.0 | 74026895.0 |
| Nippon Professional Baseball | Baseball | JPN | 2010 | 846.0 | 25626.0 | 21679596.0 |
| National Football League | American football | USA | 2011 | 254.0 | 67358.0 | 17124389.0 |
| National Basketball Association | Basketball | USA/CAN | 2011–12 | 990.0 | 17274.0 | 17100861.0 |
| Bundesliga | Association football | Germany | 2011–12 | 306.0 | 45179.0 | 13805496.0 |
| Premier League | Association football | England/Wales | 2011–12 | 380.0 | 34601.0 | 13148465.0 |
| National Hockey League | Ice hockey | USA/CAN | 2012–13 | 720.0 | 17721.0 | 12758849.0 |
| La Liga | Association football | Spain | 2011–12 | 380.0 | 30275.0 | 11504567.0 |
Question:
What's the average attendance of the leagues in the season of 2013?
Answer:
30504.0