| Year | Rank | Number |
| 2008 | 17051 | 6 |
| 2005 | 18612 | 5 |
| 2004 | 18265 | 5 |
| 2001 | 17412 | 5 |
| 2000 | 17086 | 5 |
| 1999 | 16397 | 5 |
| 1997 | 13385 | 6 |
| 1995 | 15276 | 5 |
| 1982 | 11874 | 5 |
| Year | Rank | Number |
| 2008 | 17051 | 6 |
| 2005 | 18612 | 5 |
| 2004 | 18265 | 5 |
| 2001 | 17412 | 5 |
| 2000 | 17086 | 5 |
| 1999 | 16397 | 5 |
| 1997 | 13385 | 6 |
| 1995 | 15276 | 5 |
| 1982 | 11874 | 5 |