| Year | Rank | Number |
| 2009 | 16178 | 6 |
| 2008 | 16472 | 6 |
| 2007 | 16579 | 6 |
| 2006 | 16168 | 6 |
| 2005 | 13762 | 7 |
| 2004 | 8033 | 14 |
| 2003 | 9384 | 11 |
| 2002 | 12953 | 7 |
| 2001 | 11546 | 8 |
| 2000 | 7369 | 14 |
| 1999 | 8533 | 11 |
| 1998 | 8943 | 10 |
| 1997 | 7519 | 12 |
| 1996 | 5410 | 18 |
| 1995 | 4935 | 20 |
| 1994 | 3569 | 31 |
| 1993 | 3017 | 39 |
| Year | Rank | Number |
| 2009 | 16178 | 6 |
| 2008 | 16472 | 6 |
| 2007 | 16579 | 6 |
| 2006 | 16168 | 6 |
| 2005 | 13762 | 7 |
| 2004 | 8033 | 14 |
| 2003 | 9384 | 11 |
| 2002 | 12953 | 7 |
| 2001 | 11546 | 8 |
| 2000 | 7369 | 14 |
| 1999 | 8533 | 11 |
| 1998 | 8943 | 10 |
| 1997 | 7519 | 12 |
| 1996 | 5410 | 18 |
| 1995 | 4935 | 20 |
| 1994 | 3569 | 31 |
| 1993 | 3017 | 39 |