| Year | Rank | Number |
| 2011 | 9377 | 12 |
| 2010 | 12872 | 8 |
| 2009 | 16181 | 6 |
| 2008 | 14588 | 7 |
| 2007 | 19101 | 5 |
| 2006 | 14369 | 7 |
| 2005 | 13763 | 7 |
| 2004 | 17524 | 5 |
| 2003 | 10076 | 10 |
| 2002 | 16869 | 5 |
| 2001 | 7979 | 13 |
| 1999 | 15703 | 5 |
| Year | Rank | Number |
| 2011 | 9377 | 12 |
| 2010 | 12872 | 8 |
| 2009 | 16181 | 6 |
| 2008 | 14588 | 7 |
| 2007 | 19101 | 5 |
| 2006 | 14369 | 7 |
| 2005 | 13763 | 7 |
| 2004 | 17524 | 5 |
| 2003 | 10076 | 10 |
| 2002 | 16869 | 5 |
| 2001 | 7979 | 13 |
| 1999 | 15703 | 5 |