| Year | Rank | Number |
| 2008 | 10283 | 7 |
| 2006 | 9971 | 7 |
| 2005 | 7885 | 9 |
| 2004 | 8429 | 8 |
| 2003 | 7487 | 9 |
| 2002 | 5853 | 12 |
| 2001 | 5483 | 13 |
| 2000 | 4458 | 17 |
| 1999 | 4430 | 16 |
| 1998 | 7109 | 8 |
| 1997 | 5421 | 11 |
| 1994 | 8158 | 6 |
| 1993 | 6449 | 8 |
| 1989 | 8404 | 5 |
| 1988 | 7733 | 5 |
| Year | Rank | Number |
| 2008 | 10283 | 7 |
| 2006 | 9971 | 7 |
| 2005 | 7885 | 9 |
| 2004 | 8429 | 8 |
| 2003 | 7487 | 9 |
| 2002 | 5853 | 12 |
| 2001 | 5483 | 13 |
| 2000 | 4458 | 17 |
| 1999 | 4430 | 16 |
| 1998 | 7109 | 8 |
| 1997 | 5421 | 11 |
| 1994 | 8158 | 6 |
| 1993 | 6449 | 8 |
| 1989 | 8404 | 5 |
| 1988 | 7733 | 5 |