| Year | Rank | Number |
| 2010 | 8688 | 9 |
| 2009 | 12192 | 6 |
| 2008 | 8206 | 10 |
| 2007 | 10737 | 7 |
| 2006 | 9447 | 8 |
| 2005 | 11288 | 6 |
| 2004 | 9797 | 7 |
| 2001 | 12100 | 5 |
| 2000 | 5535 | 13 |
| 1997 | 10629 | 5 |
| 1996 | 6432 | 9 |
| 1994 | 10084 | 5 |
| 1990 | 9339 | 5 |
| Year | Rank | Number |
| 2010 | 8688 | 9 |
| 2009 | 12192 | 6 |
| 2008 | 8206 | 10 |
| 2007 | 10737 | 7 |
| 2006 | 9447 | 8 |
| 2005 | 11288 | 6 |
| 2004 | 9797 | 7 |
| 2001 | 12100 | 5 |
| 2000 | 5535 | 13 |
| 1997 | 10629 | 5 |
| 1996 | 6432 | 9 |
| 1994 | 10084 | 5 |
| 1990 | 9339 | 5 |