| Year | Total |
| 2000 | 3335445 |
| 2001 | 3060489 |
| 2002 | 2988921 |
| 2003 | 3456919 |
| 2004 | 3088433 |
| 2005 | 3262881 |
| 2006 | 3459393 |
| 2007 | 3060489 |
| 2008 | 2800849 |
| 2009 | 2665385 |
| 2010 | 2634553 |