| Year | Rank | Number |
| 2011 | 9488 | 8 |
| 2010 | 8724 | 9 |
| 2009 | 8189 | 10 |
| 2008 | 8263 | 10 |
| 2007 | 5410 | 17 |
| 2006 | 8664 | 9 |
| 2005 | 9051 | 8 |
| 2004 | 6942 | 11 |
| 2003 | 7794 | 9 |
| 2002 | 8406 | 8 |
| 2000 | 8169 | 8 |
| 1999 | 7106 | 9 |
| 1998 | 11250 | 5 |
| 1996 | 7938 | 7 |
| 1995 | 10275 | 5 |
| 1994 | 6944 | 8 |
| 1992 | 8388 | 6 |
| 1990 | 9442 | 5 |
| Year | Rank | Number |
| 2011 | 9488 | 8 |
| 2010 | 8724 | 9 |
| 2009 | 8189 | 10 |
| 2008 | 8263 | 10 |
| 2007 | 5410 | 17 |
| 2006 | 8664 | 9 |
| 2005 | 9051 | 8 |
| 2004 | 6942 | 11 |
| 2003 | 7794 | 9 |
| 2002 | 8406 | 8 |
| 2000 | 8169 | 8 |
| 1999 | 7106 | 9 |
| 1998 | 11250 | 5 |
| 1996 | 7938 | 7 |
| 1995 | 10275 | 5 |
| 1994 | 6944 | 8 |
| 1992 | 8388 | 6 |
| 1990 | 9442 | 5 |