| Year | Rank | Number |
| 2011 | 3092 | 37 |
| 2010 | 5446 | 17 |
| 2009 | 3988 | 26 |
| 2008 | 4021 | 26 |
| 2007 | 4966 | 19 |
| 2006 | 6067 | 14 |
| 2005 | 4188 | 22 |
| 2004 | 5794 | 14 |
| 2003 | 5535 | 14 |
| 2002 | 6507 | 11 |
| 2001 | 7494 | 9 |
| 2000 | 6806 | 10 |
| 1999 | 6016 | 11 |
| 1998 | 6290 | 10 |
| 1997 | 10768 | 5 |
| 1996 | 7108 | 8 |
| 1995 | 8835 | 6 |
| 1929 | 4523 | 5 |
| 1927 | 4786 | 5 |