| Year | Rank | Number |
| 2006 | 8898 | 8 |
| 2004 | 10281 | 6 |
| 2003 | 9885 | 6 |
| 2002 | 8676 | 7 |
| 2001 | 10999 | 5 |
| 2000 | 3949 | 20 |
| 1999 | 4394 | 16 |
| 1998 | 4945 | 13 |
| 1997 | 3483 | 20 |
| 1996 | 4228 | 15 |
| 1995 | 8060 | 6 |
| 1994 | 4138 | 15 |
| 1993 | 4073 | 15 |
| 1992 | 4160 | 14 |
| Year | Rank | Number |
| 2006 | 8898 | 8 |
| 2004 | 10281 | 6 |
| 2003 | 9885 | 6 |
| 2002 | 8676 | 7 |
| 2001 | 10999 | 5 |
| 2000 | 3949 | 20 |
| 1999 | 4394 | 16 |
| 1998 | 4945 | 13 |
| 1997 | 3483 | 20 |
| 1996 | 4228 | 15 |
| 1995 | 8060 | 6 |
| 1994 | 4138 | 15 |
| 1993 | 4073 | 15 |
| 1992 | 4160 | 14 |