| Year | Count |
|---|---|
| 1963 | 5 |
| 1969 | 5 |
| 1977 | 5 |
| 1986 | 5 |
| 1990 | 10 |
| 1991 | 18 |
| 1993 | 25 |
| 1994 | 44 |
| 1995 | 38 |
| 1996 | 5 |
| 1997 | 13 |
| 1998 | 16 |
| 1999 | 15 |
| 2000 | 17 |
| 2001 | 13 |
| 2002 | 29 |
| 2003 | 41 |
| 2004 | 84 |
| 2005 | 23 |
| 2006 | 87 |
| 2007 | 75 |
| 2008 | 114 |
| 2009 | 57 |
| 2010 | 87 |
| 2011 | 57 |
| 2012 | 95 |
| 2013 | 69 |
| 2014 | 94 |
| 2015 | 78 |
| 2016 | 109 |
| 2017 | 112 |
| 2018 | 161 |
| 2019 | 113 |
| 2020 | 132 |
| 2021 | 112 |
| 2022 | 97 |
| 2023 | 91 |
| 2024 | 134 |