| Year | Count |
|---|---|
| 1912 | 10 |
| 1913 | 10 |
| 1914 | 5 |
| 1915 | 10 |
| 1917 | 10 |
| 1920 | 7 |
| 1922 | 7 |
| 1925 | 5 |
| 1926 | 6 |
| 1927 | 5 |
| 1929 | 14 |
| 1931 | 12 |
| 1932 | 5 |
| 1936 | 6 |
| 1937 | 5 |
| 1939 | 5 |
| 1949 | 5 |
| 1950 | 7 |
| 1951 | 20 |
| 1952 | 11 |
| 1953 | 22 |
| 1954 | 82 |
| 1955 | 54 |
| 1956 | 54 |
| 1957 | 61 |
| 1958 | 48 |
| 1959 | 48 |
| 1960 | 47 |
| 1961 | 20 |
| 1962 | 21 |
| 1963 | 81 |
| 1964 | 50 |
| 1965 | 56 |
| 1966 | 17 |
| 1967 | 16 |
| 1968 | 21 |
| 1969 | 16 |
| 1970 | 14 |
| 1971 | 7 |
| 1973 | 10 |
| 1974 | 8 |
| 1975 | 11 |
| 1980 | 36 |
| 1981 | 34 |
| 1982 | 26 |
| 1984 | 35 |
| 1985 | 15 |
| 1986 | 10 |
| 1987 | 12 |
| 1988 | 10 |
| 1996 | 5 |
| 2000 | 15 |
| 2005 | 10 |
| 2006 | 10 |