| Year | Count |
|---|---|
| 1913 | 5 |
| 1915 | 5 |
| 1916 | 5 |
| 1919 | 7 |
| 1920 | 5 |
| 1923 | 5 |
| 1924 | 7 |
| 1925 | 5 |
| 1926 | 7 |
| 1927 | 11 |
| 1928 | 13 |
| 1929 | 8 |
| 1930 | 10 |
| 1939 | 7 |
| 1940 | 7 |
| 1941 | 7 |
| 1942 | 6 |
| 1944 | 11 |
| 1946 | 9 |
| 1947 | 24 |
| 1948 | 5 |
| 1949 | 5 |
| 1954 | 18 |
| 1967 | 10 |
| 1968 | 22 |
| 1970 | 5 |
| 1971 | 6 |
| 1975 | 6 |
| 1978 | 6 |
| 1979 | 6 |
| 1980 | 5 |
| 1983 | 7 |
| 1985 | 5 |
| 1991 | 6 |
| 1993 | 6 |
| 1995 | 9 |
| 1999 | 5 |
| 2000 | 5 |