| Year | Count |
|---|---|
| 1912 | 8 |
| 1913 | 5 |
| 1914 | 5 |
| 1916 | 21 |
| 1917 | 5 |
| 1918 | 5 |
| 1921 | 7 |
| 1922 | 14 |
| 1925 | 10 |
| 1928 | 10 |
| 1933 | 7 |
| 1934 | 5 |
| 1935 | 5 |
| 1938 | 5 |
| 1941 | 13 |
| 1942 | 11 |
| 1943 | 10 |
| 1944 | 6 |
| 1946 | 6 |
| 1947 | 12 |
| 1948 | 5 |
| 1951 | 5 |
| 1952 | 11 |
| 1957 | 17 |
| 1958 | 16 |
| 1959 | 14 |
| 1961 | 6 |
| 1963 | 11 |
| 1964 | 9 |
| 1965 | 10 |
| 1966 | 6 |
| 1968 | 6 |
| 1978 | 5 |
| 1983 | 22 |
| 1988 | 5 |