| Year | Rank | Number |
| 2010 | 19271 | 5 |
| 2005 | 18619 | 5 |
| 2002 | 17601 | 5 |
| 2001 | 14974 | 6 |
| 1993 | 15289 | 5 |
| 1988 | 11451 | 6 |
| 1987 | 7859 | 9 |
| 1986 | 12376 | 5 |
| 1985 | 7414 | 9 |
| 1983 | 9973 | 6 |
| 1960 | 6262 | 6 |
| Year | Rank | Number |
| 2010 | 19271 | 5 |
| 2005 | 18619 | 5 |
| 2002 | 17601 | 5 |
| 2001 | 14974 | 6 |
| 1993 | 15289 | 5 |
| 1988 | 11451 | 6 |
| 1987 | 7859 | 9 |
| 1986 | 12376 | 5 |
| 1985 | 7414 | 9 |
| 1983 | 9973 | 6 |
| 1960 | 6262 | 6 |