| Year | Count |
|---|---|
| 1913 | 10 |
| 1920 | 14 |
| 1921 | 20 |
| 1928 | 5 |
| 1929 | 30 |
| 1930 | 29 |
| 1931 | 18 |
| 1932 | 5 |
| 1933 | 13 |
| 1934 | 37 |
| 1935 | 15 |
| 1936 | 27 |
| 1937 | 6 |
| 1938 | 12 |
| 1940 | 19 |
| 1941 | 25 |
| 1942 | 7 |
| 1943 | 7 |
| 1944 | 15 |
| 1945 | 47 |
| 1946 | 26 |
| 1947 | 25 |
| 1948 | 58 |
| 1949 | 10 |
| 1950 | 67 |
| 1951 | 45 |
| 1952 | 32 |
| 1953 | 74 |
| 1954 | 33 |
| 1955 | 37 |
| 1956 | 23 |
| 1957 | 43 |
| 1958 | 25 |
| 1959 | 22 |
| 1960 | 30 |
| 1961 | 8 |
| 1962 | 14 |
| 1963 | 29 |
| 1964 | 14 |
| 1968 | 14 |
| 1970 | 15 |
| 1974 | 10 |
| 1976 | 12 |
| 1977 | 17 |
| 1984 | 10 |