| Year | Count |
|---|---|
| 1985 | 5 |
| 1987 | 18 |
| 1988 | 32 |
| 1989 | 27 |
| 1990 | 57 |
| 1991 | 32 |
| 1992 | 81 |
| 1993 | 69 |
| 1994 | 47 |
| 1995 | 324 |
| 1996 | 349 |
| 1997 | 295 |
| 1998 | 313 |
| 1999 | 211 |
| 2000 | 188 |
| 2001 | 249 |
| 2002 | 149 |
| 2003 | 163 |
| 2004 | 197 |
| 2005 | 101 |
| 2006 | 116 |
| 2007 | 111 |
| 2008 | 35 |
| 2009 | 43 |
| 2010 | 34 |
| 2011 | 12 |
| 2012 | 12 |
| 2013 | 5 |
| 2014 | 5 |
| 2018 | 5 |
| 2021 | 12 |
| 2022 | 12 |
| 2023 | 8 |
| 2024 | 20 |