| Year | Count |
|---|---|
| 1914 | 6 |
| 1916 | 7 |
| 1917 | 11 |
| 1919 | 5 |
| 1920 | 6 |
| 1921 | 7 |
| 1923 | 9 |
| 1924 | 5 |
| 1925 | 7 |
| 1926 | 10 |
| 1927 | 6 |
| 1930 | 6 |
| 1931 | 6 |
| 1943 | 9 |
| 1946 | 8 |
| 1947 | 5 |
| 1950 | 6 |
| 1951 | 12 |
| 1952 | 6 |
| 1953 | 5 |
| 1955 | 7 |
| 1956 | 10 |
| 1957 | 7 |
| 1959 | 9 |
| 1960 | 9 |
| 1961 | 7 |
| 1962 | 10 |
| 1963 | 5 |
| 1964 | 5 |
| 1965 | 9 |
| 1966 | 5 |
| 1967 | 8 |
| 1968 | 10 |
| 1969 | 10 |
| 1970 | 5 |
| 1971 | 16 |
| 1972 | 8 |
| 1973 | 10 |
| 1974 | 5 |
| 1975 | 8 |
| 1976 | 6 |
| 1978 | 5 |
| 1980 | 9 |
| 1981 | 5 |
| 1983 | 6 |
| 1989 | 9 |
| 1990 | 6 |
| 1991 | 5 |