| Year | Count |
|---|---|
| 1924 | 5 |
| 1930 | 6 |
| 1932 | 10 |
| 1938 | 5 |
| 1940 | 33 |
| 1941 | 43 |
| 1942 | 39 |
| 1943 | 58 |
| 1944 | 67 |
| 1945 | 44 |
| 1946 | 59 |
| 1947 | 94 |
| 1948 | 69 |
| 1948 | 5 |
| 1949 | 116 |
| 1950 | 78 |
| 1951 | 173 |
| 1952 | 116 |
| 1953 | 103 |
| 1954 | 112 |
| 1955 | 203 |
| 1956 | 214 |
| 1957 | 209 |
| 1958 | 269 |
| 1959 | 187 |
| 1960 | 181 |
| 1961 | 140 |
| 1962 | 103 |
| 1963 | 75 |
| 1964 | 56 |
| 1965 | 21 |
| 1966 | 36 |
| 1967 | 39 |
| 1968 | 8 |
| 1969 | 64 |
| 1970 | 29 |
| 1971 | 32 |
| 1972 | 5 |
| 1973 | 10 |
| 1974 | 5 |
| 1977 | 5 |
| 1978 | 11 |
| 1979 | 29 |
| 1980 | 27 |
| 1981 | 16 |
| 1984 | 8 |
| 1985 | 16 |
| 1989 | 5 |
| 1993 | 5 |