| Year | Rank | Number |
| 2011 | 2800 | 42 |
| 2010 | 3030 | 38 |
| 2009 | 2655 | 46 |
| 2008 | 2799 | 43 |
| 2007 | 2880 | 41 |
| 2006 | 2543 | 47 |
| 2005 | 2582 | 43 |
| 2004 | 2170 | 54 |
| 2003 | 2366 | 45 |
| 2002 | 2313 | 45 |
| 2001 | 2191 | 47 |
| 2000 | 2348 | 41 |
| 1999 | 2114 | 45 |
| 1998 | 1943 | 50 |
| 1997 | 2143 | 41 |
| 1996 | 1624 | 60 |
| 1995 | 2153 | 38 |
| 1994 | 1835 | 47 |
| 1993 | 1435 | 66 |
| 1992 | 1753 | 48 |
| 1991 | 1808 | 44 |
| 1990 | 2139 | 34 |
| 1989 | 3252 | 18 |
| 1988 | 3124 | 17 |
| 1987 | 3112 | 16 |
| 1986 | 3048 | 16 |
| 1985 | 4169 | 10 |
| 1984 | 6726 | 5 |
| 1979 | 6442 | 5 |