| Year | Count |
|---|---|
| 1912 | 5 |
| 1913 | 9 |
| 1914 | 9 |
| 1915 | 10 |
| 1916 | 8 |
| 1917 | 16 |
| 1918 | 6 |
| 1919 | 12 |
| 1920 | 6 |
| 1921 | 5 |
| 1922 | 12 |
| 1923 | 5 |
| 1924 | 6 |
| 1925 | 14 |
| 1926 | 7 |
| 1927 | 6 |
| 1929 | 6 |
| 1930 | 7 |
| 1941 | 7 |
| 1972 | 15 |
| 1973 | 5 |
| 1978 | 13 |
| 1979 | 19 |
| 1981 | 5 |
| 1982 | 11 |
| 1983 | 7 |
| 1987 | 10 |
| 1994 | 21 |
| 1996 | 24 |
| 1997 | 12 |
| 1998 | 6 |
| 2003 | 10 |
| 2004 | 16 |
| 2005 | 14 |
| 2006 | 10 |
| 2007 | 5 |
| 2008 | 6 |
| 2010 | 36 |
| 2011 | 11 |
| 2015 | 6 |
| 2017 | 8 |
| 2019 | 5 |
| 2020 | 8 |