| Year | Count |
|---|---|
| 1912 | 8 |
| 1913 | 7 |
| 1914 | 12 |
| 1916 | 8 |
| 1917 | 5 |
| 1920 | 8 |
| 1923 | 5 |
| 1949 | 6 |
| 1950 | 5 |
| 1963 | 5 |
| 1964 | 6 |
| 1965 | 6 |
| 1966 | 6 |
| 1967 | 9 |
| 1969 | 8 |
| 1970 | 5 |
| 1971 | 5 |
| 1973 | 6 |
| 1974 | 5 |
| 1975 | 7 |
| 1976 | 6 |
| 1978 | 5 |
| 1981 | 5 |
| 1982 | 5 |
| 1983 | 10 |
| 1985 | 6 |
| 1989 | 5 |
| 1990 | 8 |
| 1991 | 8 |
| 1992 | 6 |
| 1993 | 6 |
| 1994 | 5 |
| 1997 | 9 |
| 1998 | 9 |
| 1999 | 6 |
| 2000 | 6 |
| 2001 | 22 |
| 2002 | 5 |
| 2003 | 25 |
| 2004 | 13 |
| 2005 | 20 |
| 2006 | 32 |
| 2007 | 20 |
| 2008 | 12 |
| 2009 | 6 |
| 2010 | 15 |
| 2011 | 8 |
| 2012 | 8 |
| 2013 | 9 |
| 2014 | 13 |
| 2015 | 12 |
| 2017 | 18 |
| 2018 | 6 |
| 2020 | 6 |
| 2021 | 7 |
| 2022 | 14 |
| 2023 | 7 |
| 2024 | 9 |