| Year | Rank | Number |
| 2010 | 17407 | 5 |
| 2003 | 16151 | 5 |
| 2002 | 11295 | 8 |
| 1998 | 14466 | 5 |
| 1997 | 14041 | 5 |
| 1996 | 10727 | 7 |
| 1994 | 6363 | 14 |
| 1993 | 9672 | 8 |
| 1992 | 6695 | 13 |
| 1991 | 9437 | 8 |
| 1989 | 11010 | 6 |
| Year | Rank | Number |
| 2010 | 17407 | 5 |
| 2003 | 16151 | 5 |
| 2002 | 11295 | 8 |
| 1998 | 14466 | 5 |
| 1997 | 14041 | 5 |
| 1996 | 10727 | 7 |
| 1994 | 6363 | 14 |
| 1993 | 9672 | 8 |
| 1992 | 6695 | 13 |
| 1991 | 9437 | 8 |
| 1989 | 11010 | 6 |