| Year | Count |
|---|---|
| 1916 | 10 |
| 1918 | 5 |
| 1920 | 5 |
| 1922 | 20 |
| 1926 | 5 |
| 1928 | 10 |
| 1929 | 11 |
| 1930 | 7 |
| 1931 | 33 |
| 1932 | 25 |
| 1934 | 15 |
| 1935 | 29 |
| 1937 | 26 |
| 1938 | 20 |
| 1939 | 15 |
| 1940 | 58 |
| 1941 | 32 |
| 1942 | 48 |
| 1943 | 58 |
| 1944 | 37 |
| 1945 | 38 |
| 1946 | 20 |
| 1948 | 34 |
| 1949 | 43 |
| 1950 | 30 |
| 1951 | 36 |
| 1952 | 6 |
| 1953 | 36 |
| 1954 | 24 |
| 1955 | 46 |
| 1956 | 53 |
| 1957 | 46 |
| 1958 | 48 |
| 1959 | 99 |
| 1960 | 29 |
| 1961 | 27 |
| 1962 | 51 |
| 1963 | 57 |
| 1964 | 23 |
| 1966 | 28 |
| 1967 | 12 |
| 1968 | 18 |
| 1969 | 33 |
| 1970 | 28 |
| 1971 | 16 |
| 1972 | 5 |
| 1973 | 18 |
| 1977 | 10 |
| 1978 | 5 |
| 1979 | 6 |
| 1981 | 6 |
| 1987 | 6 |
| 1988 | 5 |
| 1989 | 6 |
| 1996 | 10 |
| 2002 | 5 |