| Year | Count |
|---|---|
| 1985 | 102 |
| 1986 | 343 |
| 1987 | 22 |
| 1989 | 6 |
| 1990 | 24 |
| 1991 | 41 |
| 1992 | 41 |
| 1993 | 131 |
| 1994 | 101 |
| 1995 | 104 |
| 1996 | 82 |
| 1997 | 106 |
| 1998 | 71 |
| 1999 | 117 |
| 2000 | 111 |
| 2001 | 75 |
| 2002 | 52 |
| 2003 | 86 |
| 2004 | 54 |
| 2005 | 35 |
| 2006 | 19 |
| 2007 | 13 |
| 2008 | 22 |
| 2010 | 17 |
| 2011 | 13 |
| 2012 | 15 |
| 2015 | 15 |
| 2017 | 15 |
| 2019 | 5 |
| 2020 | 5 |
| 2022 | 9 |
| 2023 | 12 |
| 2024 | 40 |