| Year | Count |
|---|---|
| 1913 | 16 |
| 1917 | 6 |
| 1921 | 5 |
| 1924 | 12 |
| 1930 | 20 |
| 1931 | 39 |
| 1932 | 21 |
| 1935 | 10 |
| 1940 | 27 |
| 1941 | 21 |
| 1942 | 21 |
| 1944 | 10 |
| 1945 | 28 |
| 1946 | 5 |
| 1947 | 39 |
| 1948 | 37 |
| 1949 | 34 |
| 1950 | 22 |
| 1952 | 51 |
| 1953 | 29 |
| 1954 | 19 |
| 1955 | 50 |
| 1956 | 33 |
| 1957 | 59 |
| 1958 | 90 |
| 1959 | 49 |
| 1960 | 79 |
| 1961 | 47 |
| 1962 | 44 |
| 1963 | 44 |
| 1964 | 25 |
| 1965 | 17 |
| 1966 | 22 |
| 1967 | 15 |
| 1968 | 38 |
| 1969 | 15 |
| 1970 | 51 |
| 1971 | 16 |
| 1972 | 20 |
| 1976 | 7 |