| Year | Rank | Number |
| 2011 | 13946 | 7 |
| 2009 | 18538 | 5 |
| 2008 | 11150 | 10 |
| 2007 | 14617 | 7 |
| 2006 | 16069 | 6 |
| 2005 | 11326 | 9 |
| 2003 | 14736 | 6 |
| 2002 | 14457 | 6 |
| 1999 | 15533 | 5 |
| 1997 | 14840 | 5 |
| 1994 | 11082 | 7 |
| Year | Rank | Number |
| 2011 | 13946 | 7 |
| 2009 | 18538 | 5 |
| 2008 | 11150 | 10 |
| 2007 | 14617 | 7 |
| 2006 | 16069 | 6 |
| 2005 | 11326 | 9 |
| 2003 | 14736 | 6 |
| 2002 | 14457 | 6 |
| 1999 | 15533 | 5 |
| 1997 | 14840 | 5 |
| 1994 | 11082 | 7 |