| Year | Rank | Number |
| 2011 | 11474 | 6 |
| 2010 | 11431 | 6 |
| 2009 | 7391 | 11 |
| 2008 | 10435 | 7 |
| 2007 | 6431 | 13 |
| 2006 | 11318 | 6 |
| 2005 | 6861 | 11 |
| 2004 | 6755 | 11 |
| 2003 | 6051 | 12 |
| 2002 | 10030 | 6 |
| 2001 | 6226 | 11 |
| 2000 | 5181 | 14 |
| 1999 | 8291 | 7 |
| 1997 | 8701 | 6 |
| 1996 | 8450 | 6 |
| 1995 | 9578 | 5 |
| 1977 | 6328 | 5 |
| Year | Rank | Number |
| 2011 | 11474 | 6 |
| 2010 | 11431 | 6 |
| 2009 | 7391 | 11 |
| 2008 | 10435 | 7 |
| 2007 | 6431 | 13 |
| 2006 | 11318 | 6 |
| 2005 | 6861 | 11 |
| 2004 | 6755 | 11 |
| 2003 | 6051 | 12 |
| 2002 | 10030 | 6 |
| 2001 | 6226 | 11 |
| 2000 | 5181 | 14 |
| 1999 | 8291 | 7 |
| 1997 | 8701 | 6 |
| 1996 | 8450 | 6 |
| 1995 | 9578 | 5 |
| 1977 | 6328 | 5 |