| Year | Rank | Number |
| 2011 | 8303 | 9 |
| 2010 | 7264 | 11 |
| 2009 | 6513 | 13 |
| 2008 | 6911 | 12 |
| 2007 | 8463 | 9 |
| 2006 | 7124 | 11 |
| 2005 | 4372 | 20 |
| 2004 | 9339 | 7 |
| 2003 | 6932 | 10 |
| 2002 | 7962 | 8 |
| 2001 | 5810 | 12 |
| 2000 | 6078 | 11 |
| 1999 | 10606 | 5 |
| 1998 | 6018 | 10 |
| 1997 | 6868 | 8 |
| 1994 | 9421 | 5 |
| Year | Rank | Number |
| 2011 | 8303 | 9 |
| 2010 | 7264 | 11 |
| 2009 | 6513 | 13 |
| 2008 | 6911 | 12 |
| 2007 | 8463 | 9 |
| 2006 | 7124 | 11 |
| 2005 | 4372 | 20 |
| 2004 | 9339 | 7 |
| 2003 | 6932 | 10 |
| 2002 | 7962 | 8 |
| 2001 | 5810 | 12 |
| 2000 | 6078 | 11 |
| 1999 | 10606 | 5 |
| 1998 | 6018 | 10 |
| 1997 | 6868 | 8 |
| 1994 | 9421 | 5 |