| Year | Count |
|---|---|
| 1912 | 6 |
| 1913 | 8 |
| 1914 | 5 |
| 1915 | 20 |
| 1916 | 18 |
| 1917 | 9 |
| 1918 | 35 |
| 1919 | 37 |
| 1920 | 35 |
| 1921 | 37 |
| 1922 | 17 |
| 1923 | 29 |
| 1924 | 20 |
| 1925 | 11 |
| 1926 | 10 |
| 1927 | 16 |
| 1928 | 15 |
| 1929 | 13 |
| 1930 | 23 |
| 1939 | 6 |
| 1940 | 6 |
| 1941 | 13 |
| 1942 | 7 |
| 1943 | 10 |
| 1944 | 9 |
| 1946 | 5 |
| 1947 | 27 |
| 1949 | 5 |
| 1952 | 5 |
| 1953 | 10 |
| 1954 | 5 |
| 1957 | 20 |
| 1961 | 7 |
| 1962 | 10 |
| 1963 | 6 |
| 1965 | 5 |
| 1966 | 10 |
| 1967 | 17 |
| 1968 | 29 |
| 1969 | 22 |
| 1970 | 21 |
| 1972 | 5 |
| 1973 | 15 |
| 1975 | 5 |
| 1977 | 6 |
| 1979 | 11 |
| 1987 | 12 |
| 1988 | 5 |
| 1989 | 10 |