| Year | Rank | Number |
| 2008 | 11953 | 9 |
| 2006 | 15917 | 6 |
| 2005 | 8529 | 13 |
| 2004 | 10224 | 10 |
| 2003 | 16797 | 5 |
| 2002 | 11533 | 8 |
| 1999 | 15386 | 5 |
| 1997 | 7995 | 11 |
| 1996 | 12476 | 6 |
| 1995 | 7229 | 12 |
| 1994 | 14318 | 5 |
| 1993 | 11039 | 7 |
| 1991 | 8885 | 9 |
| 1990 | 8125 | 10 |
| Year | Rank | Number |
| 2008 | 11953 | 9 |
| 2006 | 15917 | 6 |
| 2005 | 8529 | 13 |
| 2004 | 10224 | 10 |
| 2003 | 16797 | 5 |
| 2002 | 11533 | 8 |
| 1999 | 15386 | 5 |
| 1997 | 7995 | 11 |
| 1996 | 12476 | 6 |
| 1995 | 7229 | 12 |
| 1994 | 14318 | 5 |
| 1993 | 11039 | 7 |
| 1991 | 8885 | 9 |
| 1990 | 8125 | 10 |