| Year | Count |
|---|---|
| 1916 | 12 |
| 1917 | 5 |
| 1928 | 5 |
| 1933 | 10 |
| 1937 | 6 |
| 1943 | 5 |
| 1945 | 8 |
| 1947 | 5 |
| 1948 | 10 |
| 1949 | 5 |
| 1950 | 7 |
| 1951 | 10 |
| 1953 | 12 |
| 1954 | 11 |
| 1955 | 25 |
| 1956 | 25 |
| 1957 | 17 |
| 1958 | 34 |
| 1959 | 23 |
| 1960 | 35 |
| 1961 | 16 |
| 1962 | 5 |
| 1963 | 22 |
| 1964 | 10 |
| 1964 | 5 |
| 1968 | 28 |
| 1969 | 18 |
| 1970 | 15 |
| 1971 | 6 |
| 1973 | 11 |
| 1975 | 6 |
| 1978 | 5 |
| 1979 | 10 |
| 1984 | 6 |
| 1985 | 10 |
| 1986 | 22 |
| 1999 | 5 |