| Year | Count |
|---|---|
| 1916 | 7 |
| 1918 | 7 |
| 1919 | 5 |
| 1921 | 8 |
| 1922 | 9 |
| 1927 | 8 |
| 1928 | 6 |
| 1929 | 9 |
| 1930 | 8 |
| 1941 | 5 |
| 1942 | 8 |
| 1944 | 10 |
| 1945 | 7 |
| 1946 | 5 |
| 1948 | 13 |
| 1949 | 8 |
| 1954 | 18 |
| 1955 | 21 |
| 1956 | 27 |
| 1957 | 22 |
| 1958 | 20 |
| 1959 | 6 |
| 1960 | 5 |
| 1961 | 7 |
| 1962 | 20 |
| 1963 | 23 |
| 1964 | 22 |
| 1965 | 26 |
| 1966 | 8 |
| 1967 | 7 |
| 1968 | 9 |
| 1969 | 17 |
| 1970 | 12 |
| 1973 | 12 |
| 1974 | 8 |
| 1975 | 15 |
| 1977 | 15 |
| 1978 | 6 |
| 1979 | 7 |
| 1980 | 7 |
| 1981 | 5 |
| 1982 | 5 |
| 1983 | 6 |
| 1985 | 8 |
| 1986 | 11 |
| 1987 | 10 |
| 1988 | 5 |
| 1989 | 7 |
| 1990 | 6 |
| 1992 | 6 |
| 1994 | 15 |
| 1995 | 5 |
| 1996 | 7 |
| 1998 | 6 |
| 1999 | 6 |
| 2001 | 24 |
| 2006 | 5 |
| 2011 | 20 |
| 2015 | 12 |
| 2016 | 12 |
| 2018 | 6 |
| 2024 | 5 |