| Year | Rank | Number |
| 2009 | 11954 | 6 |
| 2008 | 12110 | 6 |
| 2007 | 13818 | 5 |
| 1996 | 10092 | 5 |
| 1992 | 9409 | 5 |
| 1990 | 7820 | 6 |
| 1989 | 8867 | 5 |
| 1985 | 7281 | 5 |
| 1974 | 5765 | 5 |
| Year | Rank | Number |
| 2009 | 11954 | 6 |
| 2008 | 12110 | 6 |
| 2007 | 13818 | 5 |
| 1996 | 10092 | 5 |
| 1992 | 9409 | 5 |
| 1990 | 7820 | 6 |
| 1989 | 8867 | 5 |
| 1985 | 7281 | 5 |
| 1974 | 5765 | 5 |