| Year | Rank | Number |
| 2000 | 13409 | 6 |
| 1999 | 12919 | 6 |
| 1997 | 11018 | 7 |
| 1996 | 8907 | 9 |
| 1995 | 13725 | 5 |
| 1994 | 11978 | 6 |
| 1993 | 10761 | 7 |
| 1992 | 8150 | 10 |
| 1991 | 6298 | 14 |
| 1990 | 6914 | 12 |
| 1989 | 4688 | 19 |
| 1988 | 7189 | 10 |
| 1987 | 6839 | 10 |
| 1986 | 5789 | 12 |
| Year | Rank | Number |
| 2000 | 13409 | 6 |
| 1999 | 12919 | 6 |
| 1997 | 11018 | 7 |
| 1996 | 8907 | 9 |
| 1995 | 13725 | 5 |
| 1994 | 11978 | 6 |
| 1993 | 10761 | 7 |
| 1992 | 8150 | 10 |
| 1991 | 6298 | 14 |
| 1990 | 6914 | 12 |
| 1989 | 4688 | 19 |
| 1988 | 7189 | 10 |
| 1987 | 6839 | 10 |
| 1986 | 5789 | 12 |