| Year | Count |
|---|---|
| 1923 | 8 |
| 1927 | 12 |
| 1928 | 18 |
| 1929 | 30 |
| 1931 | 16 |
| 1932 | 36 |
| 1933 | 26 |
| 1934 | 13 |
| 1935 | 45 |
| 1936 | 13 |
| 1937 | 10 |
| 1938 | 11 |
| 1939 | 9 |
| 1940 | 13 |
| 1941 | 6 |
| 1950 | 15 |
| 1951 | 10 |
| 1952 | 21 |
| 1953 | 10 |
| 1954 | 20 |
| 1955 | 13 |
| 1956 | 6 |
| 1957 | 16 |
| 1958 | 19 |
| 1959 | 9 |
| 1960 | 12 |
| 1961 | 9 |
| 1967 | 5 |
| 1968 | 9 |
| 1969 | 9 |
| 1970 | 5 |
| 1971 | 14 |
| 1972 | 8 |
| 1973 | 5 |
| 1974 | 10 |
| 1975 | 5 |
| 1976 | 7 |
| 1979 | 6 |
| 1980 | 6 |
| 1982 | 5 |
| 1984 | 7 |
| 1985 | 12 |