| Year | Count |
|---|---|
| 1922 | 7 |
| 1926 | 5 |
| 1939 | 7 |
| 1950 | 6 |
| 1959 | 5 |
| 1963 | 6 |
| 1971 | 5 |
| 1982 | 6 |
| 1987 | 13 |
| 1989 | 22 |
| 1990 | 5 |
| 1990 | 49 |
| 1991 | 6 |
| 1992 | 39 |
| 1993 | 21 |
| 1994 | 6 |
| 1995 | 12 |
| 1996 | 42 |
| 1996 | 20 |
| 1997 | 37 |
| 1998 | 32 |
| 1998 | 10 |
| 1999 | 165 |
| 1999 | 89 |
| 2000 | 176 |
| 2000 | 53 |
| 2001 | 116 |
| 2001 | 44 |
| 2002 | 58 |
| 2002 | 20 |
| 2003 | 71 |
| 2004 | 57 |
| 2005 | 32 |
| 2005 | 6 |
| 2006 | 97 |
| 2007 | 71 |
| 2007 | 10 |
| 2008 | 73 |
| 2009 | 84 |
| 2010 | 111 |
| 2011 | 83 |
| 2011 | 10 |
| 2012 | 84 |
| 2013 | 69 |
| 2014 | 63 |
| 2015 | 53 |
| 2015 | 12 |
| 2016 | 24 |
| 2016 | 10 |
| 2017 | 17 |
| 2018 | 20 |
| 2019 | 11 |
| 2020 | 17 |
| 2021 | 20 |
| 2023 | 10 |
| 2024 | 17 |