| Year | Count |
|---|---|
| 1913 | 5 |
| 1915 | 8 |
| 1917 | 6 |
| 1918 | 6 |
| 1919 | 6 |
| 1920 | 5 |
| 1921 | 6 |
| 1922 | 11 |
| 1923 | 10 |
| 1924 | 6 |
| 1925 | 7 |
| 1926 | 13 |
| 1928 | 10 |
| 1929 | 6 |
| 1930 | 7 |
| 1931 | 7 |
| 1933 | 6 |
| 1936 | 5 |
| 1937 | 6 |
| 1938 | 8 |
| 1939 | 6 |
| 1942 | 5 |
| 1944 | 5 |
| 1945 | 6 |
| 1946 | 6 |
| 1948 | 6 |
| 1949 | 9 |
| 1950 | 9 |
| 1952 | 7 |
| 1953 | 7 |
| 1954 | 11 |
| 1955 | 9 |
| 1956 | 9 |
| 1958 | 10 |
| 1959 | 6 |
| 1960 | 5 |
| 1963 | 8 |
| 1965 | 9 |
| 1966 | 9 |
| 1967 | 5 |
| 1970 | 5 |
| 1971 | 9 |
| 1972 | 5 |
| 1973 | 5 |
| 1975 | 6 |
| 1977 | 5 |
| 1984 | 9 |
| 1985 | 6 |