| Year | Count |
|---|---|
| 1912 | 5 |
| 1914 | 6 |
| 1915 | 9 |
| 1916 | 8 |
| 1917 | 8 |
| 1918 | 8 |
| 1919 | 13 |
| 1920 | 10 |
| 1921 | 5 |
| 1922 | 8 |
| 1923 | 10 |
| 1924 | 10 |
| 1925 | 7 |
| 1926 | 5 |
| 1930 | 8 |
| 1931 | 10 |
| 1934 | 7 |
| 1936 | 7 |
| 1937 | 8 |
| 1942 | 7 |
| 1943 | 11 |
| 1944 | 11 |
| 1945 | 6 |
| 1947 | 10 |
| 1948 | 7 |
| 1953 | 6 |
| 1957 | 5 |
| 1960 | 10 |
| 1961 | 8 |
| 1962 | 7 |
| 1963 | 5 |
| 1964 | 8 |
| 1966 | 7 |
| 1967 | 8 |
| 1968 | 6 |
| 1969 | 8 |
| 1970 | 9 |
| 1971 | 12 |
| 1972 | 10 |
| 1973 | 9 |
| 1974 | 11 |
| 1976 | 10 |
| 1978 | 10 |
| 1979 | 5 |
| 1980 | 5 |
| 1982 | 9 |
| 1983 | 5 |
| 1988 | 6 |
| 1993 | 5 |
| 2005 | 5 |
| 2007 | 5 |
| 2020 | 6 |