| Year | Count |
|---|---|
| 1921 | 5 |
| 1922 | 5 |
| 1923 | 8 |
| 1926 | 6 |
| 1928 | 7 |
| 1939 | 5 |
| 1941 | 10 |
| 1943 | 6 |
| 1944 | 8 |
| 1945 | 7 |
| 1946 | 7 |
| 1947 | 18 |
| 1949 | 5 |
| 1954 | 23 |
| 1955 | 18 |
| 1956 | 6 |
| 1957 | 5 |
| 1958 | 8 |
| 1959 | 8 |
| 1960 | 19 |
| 1963 | 22 |
| 1966 | 6 |
| 1967 | 9 |
| 1971 | 12 |
| 1972 | 5 |
| 1973 | 5 |
| 1975 | 16 |
| 1977 | 5 |
| 1978 | 8 |
| 1979 | 22 |
| 1980 | 8 |
| 1981 | 10 |
| 1982 | 7 |
| 1983 | 8 |
| 1984 | 9 |
| 1985 | 10 |
| 1987 | 5 |
| 1988 | 6 |
| 1989 | 10 |
| 1990 | 10 |
| 1991 | 5 |
| 1992 | 5 |
| 1993 | 6 |
| 1994 | 12 |
| 1995 | 5 |
| 1996 | 9 |
| 1997 | 7 |
| 1998 | 7 |
| 2000 | 9 |
| 2001 | 7 |
| 2008 | 7 |
| 2009 | 5 |
| 2011 | 12 |
| 2022 | 12 |