| Year | Rank | Number |
| 2008 | 18538 | 5 |
| 1996 | 8392 | 10 |
| 1995 | 14277 | 5 |
| 1994 | 12357 | 6 |
| 1993 | 11002 | 7 |
| 1992 | 9815 | 8 |
| 1991 | 6731 | 13 |
| 1990 | 8101 | 10 |
| 1987 | 10331 | 6 |
| 1986 | 11571 | 5 |
| 1984 | 9529 | 6 |
| 1982 | 9626 | 6 |
| 1973 | 8893 | 5 |
| Year | Rank | Number |
| 2008 | 18538 | 5 |
| 1996 | 8392 | 10 |
| 1995 | 14277 | 5 |
| 1994 | 12357 | 6 |
| 1993 | 11002 | 7 |
| 1992 | 9815 | 8 |
| 1991 | 6731 | 13 |
| 1990 | 8101 | 10 |
| 1987 | 10331 | 6 |
| 1986 | 11571 | 5 |
| 1984 | 9529 | 6 |
| 1982 | 9626 | 6 |
| 1973 | 8893 | 5 |