| Year | Rank | Number |
| 2011 | 9140 | 12 |
| 2010 | 8272 | 14 |
| 2009 | 11440 | 9 |
| 2008 | 12633 | 8 |
| 2007 | 7734 | 16 |
| 2006 | 7163 | 17 |
| 2005 | 10974 | 9 |
| 2004 | 11712 | 8 |
| 2003 | 10490 | 9 |
| 2001 | 15535 | 5 |
| 2000 | 10813 | 8 |
| 1996 | 11925 | 6 |
| 1995 | 10599 | 7 |
| 1990 | 9287 | 8 |
| 1989 | 9731 | 7 |
| 1986 | 7778 | 8 |
| 1985 | 10743 | 5 |
| Year | Rank | Number |
| 2011 | 9140 | 12 |
| 2010 | 8272 | 14 |
| 2009 | 11440 | 9 |
| 2008 | 12633 | 8 |
| 2007 | 7734 | 16 |
| 2006 | 7163 | 17 |
| 2005 | 10974 | 9 |
| 2004 | 11712 | 8 |
| 2003 | 10490 | 9 |
| 2001 | 15535 | 5 |
| 2000 | 10813 | 8 |
| 1996 | 11925 | 6 |
| 1995 | 10599 | 7 |
| 1990 | 9287 | 8 |
| 1989 | 9731 | 7 |
| 1986 | 7778 | 8 |
| 1985 | 10743 | 5 |