| Year | Rank | Number |
| 2007 | 17713 | 5 |
| 1999 | 12741 | 6 |
| 1998 | 11169 | 7 |
| 1997 | 10880 | 7 |
| 1996 | 11856 | 6 |
| 1995 | 10546 | 7 |
| 1994 | 7606 | 11 |
| 1993 | 8068 | 10 |
| 1992 | 8077 | 10 |
| 1991 | 8606 | 9 |
| 1990 | 6470 | 13 |
| 1989 | 5842 | 14 |
| 1988 | 8392 | 8 |
| 1987 | 6337 | 11 |
| 1986 | 7131 | 9 |
| 1984 | 8160 | 7 |
| 1982 | 10517 | 5 |
| Year | Rank | Number |
| 2007 | 17713 | 5 |
| 1999 | 12741 | 6 |
| 1998 | 11169 | 7 |
| 1997 | 10880 | 7 |
| 1996 | 11856 | 6 |
| 1995 | 10546 | 7 |
| 1994 | 7606 | 11 |
| 1993 | 8068 | 10 |
| 1992 | 8077 | 10 |
| 1991 | 8606 | 9 |
| 1990 | 6470 | 13 |
| 1989 | 5842 | 14 |
| 1988 | 8392 | 8 |
| 1987 | 6337 | 11 |
| 1986 | 7131 | 9 |
| 1984 | 8160 | 7 |
| 1982 | 10517 | 5 |