| Year | Rank | Number |
| 2011 | 15457 | 6 |
| 2007 | 10363 | 11 |
| 2006 | 18198 | 5 |
| 2005 | 15206 | 6 |
| 2004 | 13256 | 7 |
| 2002 | 14256 | 6 |
| 2001 | 12547 | 7 |
| 2000 | 13809 | 6 |
| 1999 | 9799 | 9 |
| 1997 | 14595 | 5 |
| 1996 | 9907 | 8 |
| 1995 | 8313 | 10 |
| 1993 | 9912 | 8 |
| 1992 | 12319 | 6 |
| 1991 | 7122 | 12 |
| 1990 | 9576 | 8 |
| 1989 | 7638 | 10 |
| Year | Rank | Number |
| 2011 | 15457 | 6 |
| 2007 | 10363 | 11 |
| 2006 | 18198 | 5 |
| 2005 | 15206 | 6 |
| 2004 | 13256 | 7 |
| 2002 | 14256 | 6 |
| 2001 | 12547 | 7 |
| 2000 | 13809 | 6 |
| 1999 | 9799 | 9 |
| 1997 | 14595 | 5 |
| 1996 | 9907 | 8 |
| 1995 | 8313 | 10 |
| 1993 | 9912 | 8 |
| 1992 | 12319 | 6 |
| 1991 | 7122 | 12 |
| 1990 | 9576 | 8 |
| 1989 | 7638 | 10 |