| Year | Rank | Number |
| 2011 | 5602 | 24 |
| 2010 | 4534 | 32 |
| 2009 | 4831 | 30 |
| 2008 | 3807 | 42 |
| 2007 | 2664 | 69 |
| 2006 | 3114 | 54 |
| 2005 | 2214 | 83 |
| 2004 | 1917 | 98 |
| 2003 | 2329 | 72 |
| 2002 | 2363 | 68 |
| 2001 | 2424 | 65 |
| 2000 | 3044 | 46 |
| 1999 | 9967 | 9 |
| 1997 | 15074 | 5 |
| 1994 | 14704 | 5 |
| 1990 | 14227 | 5 |
| Year | Rank | Number |
| 2011 | 5602 | 24 |
| 2010 | 4534 | 32 |
| 2009 | 4831 | 30 |
| 2008 | 3807 | 42 |
| 2007 | 2664 | 69 |
| 2006 | 3114 | 54 |
| 2005 | 2214 | 83 |
| 2004 | 1917 | 98 |
| 2003 | 2329 | 72 |
| 2002 | 2363 | 68 |
| 2001 | 2424 | 65 |
| 2000 | 3044 | 46 |
| 1999 | 9967 | 9 |
| 1997 | 15074 | 5 |
| 1994 | 14704 | 5 |
| 1990 | 14227 | 5 |