| Year | Count |
|---|---|
| 1911 | 12 |
| 1922 | 8 |
| 1924 | 12 |
| 1925 | 7 |
| 1926 | 5 |
| 1927 | 12 |
| 1928 | 14 |
| 1929 | 16 |
| 1931 | 12 |
| 1932 | 18 |
| 1933 | 16 |
| 1934 | 10 |
| 1935 | 7 |
| 1937 | 6 |
| 1938 | 6 |
| 1940 | 5 |
| 1949 | 5 |
| 1950 | 57 |
| 1951 | 47 |
| 1952 | 35 |
| 1953 | 40 |
| 1954 | 40 |
| 1955 | 26 |
| 1956 | 36 |
| 1957 | 34 |
| 1958 | 38 |
| 1959 | 33 |
| 1960 | 38 |
| 1961 | 38 |
| 1962 | 126 |
| 1962 | 12 |
| 1964 | 10 |
| 1967 | 10 |
| 1968 | 40 |
| 1969 | 44 |
| 1970 | 32 |
| 1971 | 45 |
| 1972 | 19 |
| 1972 | 5 |
| 1973 | 29 |
| 1974 | 29 |
| 1975 | 30 |
| 1976 | 15 |
| 1977 | 22 |
| 1978 | 21 |
| 1979 | 12 |
| 1980 | 21 |
| 1980 | 5 |
| 1981 | 15 |
| 1982 | 18 |
| 1982 | 5 |
| 1983 | 16 |
| 1984 | 13 |
| 1985 | 18 |
| 1986 | 22 |
| 1987 | 10 |
| 1988 | 7 |