| Year | Rank | Number |
| 2011 | 17212 | 5 |
| 2008 | 15735 | 6 |
| 2007 | 12881 | 8 |
| 2001 | 13845 | 6 |
| 2000 | 13482 | 6 |
| 1998 | 12755 | 6 |
| 1983 | 8165 | 7 |
| 1982 | 8352 | 7 |
| 1981 | 8245 | 7 |
| 1980 | 6364 | 10 |
| 1979 | 10432 | 5 |
| 1978 | 4704 | 14 |
| 1977 | 5946 | 10 |
| 1976 | 8312 | 6 |
| 1975 | 4894 | 12 |
| 1974 | 6329 | 8 |
| 1973 | 6767 | 7 |
| 1972 | 8459 | 5 |
| Year | Rank | Number |
| 2011 | 17212 | 5 |
| 2008 | 15735 | 6 |
| 2007 | 12881 | 8 |
| 2001 | 13845 | 6 |
| 2000 | 13482 | 6 |
| 1998 | 12755 | 6 |
| 1983 | 8165 | 7 |
| 1982 | 8352 | 7 |
| 1981 | 8245 | 7 |
| 1980 | 6364 | 10 |
| 1979 | 10432 | 5 |
| 1978 | 4704 | 14 |
| 1977 | 5946 | 10 |
| 1976 | 8312 | 6 |
| 1975 | 4894 | 12 |
| 1974 | 6329 | 8 |
| 1973 | 6767 | 7 |
| 1972 | 8459 | 5 |