| Year | Rank | Number |
| 1996 | 14761 | 5 |
| 1995 | 9170 | 9 |
| 1994 | 10089 | 8 |
| 1993 | 5806 | 16 |
| 1992 | 6499 | 14 |
| 1991 | 5299 | 18 |
| 1990 | 4781 | 20 |
| 1989 | 4586 | 20 |
| 1988 | 4235 | 21 |
| 1987 | 4965 | 16 |
| 1986 | 4635 | 17 |
| 1985 | 5201 | 14 |
| 1983 | 8529 | 7 |
| 1982 | 8714 | 7 |
| 1981 | 7768 | 8 |
| 1980 | 7085 | 9 |
| 1978 | 10596 | 5 |
| 1976 | 10068 | 5 |
| Year | Rank | Number |
| 1996 | 14761 | 5 |
| 1995 | 9170 | 9 |
| 1994 | 10089 | 8 |
| 1993 | 5806 | 16 |
| 1992 | 6499 | 14 |
| 1991 | 5299 | 18 |
| 1990 | 4781 | 20 |
| 1989 | 4586 | 20 |
| 1988 | 4235 | 21 |
| 1987 | 4965 | 16 |
| 1986 | 4635 | 17 |
| 1985 | 5201 | 14 |
| 1983 | 8529 | 7 |
| 1982 | 8714 | 7 |
| 1981 | 7768 | 8 |
| 1980 | 7085 | 9 |
| 1978 | 10596 | 5 |
| 1976 | 10068 | 5 |