| Year | Count |
|---|---|
| 1913 | 10 |
| 1917 | 5 |
| 1918 | 14 |
| 1921 | 12 |
| 1922 | 7 |
| 1926 | 5 |
| 1927 | 12 |
| 1928 | 10 |
| 1931 | 12 |
| 1932 | 10 |
| 1934 | 5 |
| 1939 | 6 |
| 1950 | 11 |
| 1951 | 14 |
| 1952 | 10 |
| 1953 | 14 |
| 1954 | 12 |
| 1955 | 12 |
| 1956 | 16 |
| 1957 | 30 |
| 1958 | 12 |
| 1959 | 26 |
| 1960 | 33 |
| 1961 | 34 |
| 1962 | 6 |
| 1963 | 9 |
| 1966 | 6 |
| 1967 | 15 |
| 1968 | 13 |
| 1969 | 8 |
| 1971 | 24 |
| 1972 | 16 |
| 1973 | 8 |
| 1974 | 36 |
| 1975 | 28 |
| 1976 | 24 |
| 1977 | 29 |
| 1978 | 22 |
| 1979 | 8 |
| 1980 | 15 |
| 1981 | 16 |
| 1982 | 11 |
| 1983 | 12 |
| 1984 | 26 |
| 1985 | 16 |
| 1986 | 10 |
| 1987 | 10 |
| 1988 | 16 |
| 1989 | 5 |
| 1992 | 7 |
| 1995 | 7 |
| 1996 | 5 |
| 1997 | 8 |
| 1998 | 14 |
| 2003 | 20 |
| 2004 | 16 |
| 2006 | 6 |
| 2014 | 6 |