| Year | Count |
|---|---|
| 1913 | 8 |
| 1915 | 11 |
| 1916 | 5 |
| 1917 | 8 |
| 1919 | 9 |
| 1921 | 6 |
| 1923 | 12 |
| 1924 | 10 |
| 1925 | 18 |
| 1926 | 16 |
| 1927 | 10 |
| 1928 | 12 |
| 1929 | 14 |
| 1932 | 6 |
| 1937 | 6 |
| 1941 | 10 |
| 1943 | 5 |
| 1946 | 6 |
| 1948 | 5 |
| 1951 | 6 |
| 1952 | 11 |
| 1953 | 9 |
| 1954 | 6 |
| 1956 | 5 |
| 1957 | 10 |
| 1958 | 22 |
| 1959 | 14 |
| 1961 | 6 |
| 1962 | 6 |
| 1963 | 5 |
| 1965 | 7 |
| 1966 | 6 |
| 1967 | 11 |
| 1968 | 6 |
| 1969 | 9 |
| 1970 | 8 |
| 1971 | 7 |
| 1973 | 6 |
| 1977 | 18 |
| 1982 | 5 |
| 1983 | 8 |
| 1991 | 5 |
| 1997 | 6 |