Year | Average |
2001 | 3197967 |
2002 | 3024705 |
2003 | 3222920 |
2004 | 3272676 |
2005 | 3175657 |
2006 | 3361137 |
2007 | 3259941 |
2008 | 2930669 |
2009 | 2733117 |
2010 | 2649969 |