| Year | Count |
|---|---|
| 1912 | 5 |
| 1914 | 5 |
| 1917 | 22 |
| 1918 | 15 |
| 1919 | 26 |
| 1920 | 13 |
| 1921 | 32 |
| 1922 | 30 |
| 1923 | 28 |
| 1924 | 32 |
| 1925 | 14 |
| 1926 | 17 |
| 1927 | 18 |
| 1928 | 20 |
| 1929 | 17 |
| 1930 | 14 |
| 1931 | 10 |
| 1933 | 11 |
| 1934 | 6 |
| 1943 | 11 |
| 1946 | 5 |
| 1947 | 5 |
| 1948 | 5 |
| 1949 | 10 |
| 1950 | 10 |
| 1953 | 17 |
| 1958 | 6 |
| 1961 | 14 |
| 1964 | 5 |
| 1970 | 5 |
| 1978 | 5 |
| 1979 | 20 |
| 1980 | 45 |
| 1981 | 14 |
| 1982 | 5 |
| 1984 | 16 |
| 1989 | 22 |
| 1990 | 24 |
| 1992 | 41 |
| 1994 | 5 |
| 1995 | 11 |
| 1996 | 12 |
| 1997 | 11 |
| 1999 | 16 |
| 2000 | 37 |
| 2001 | 20 |
| 2003 | 22 |
| 2004 | 22 |
| 2005 | 14 |
| 2006 | 10 |
| 2007 | 10 |
| 2008 | 16 |
| 2011 | 5 |
| 2013 | 5 |
| 2014 | 5 |
| 2015 | 5 |
| 2020 | 10 |