| Year | Count |
|---|---|
| 1912 | 23 |
| 1913 | 27 |
| 1914 | 17 |
| 1915 | 33 |
| 1916 | 29 |
| 1917 | 47 |
| 1918 | 103 |
| 1919 | 28 |
| 1921 | 6 |
| 1922 | 10 |
| 1923 | 9 |
| 1924 | 7 |
| 1925 | 5 |
| 1926 | 5 |
| 1928 | 5 |
| 1934 | 6 |
| 1935 | 5 |
| 1937 | 5 |
| 1938 | 9 |
| 1939 | 6 |
| 1940 | 14 |
| 1941 | 7 |
| 1942 | 15 |
| 1943 | 11 |
| 1944 | 10 |
| 1945 | 10 |
| 1946 | 11 |
| 1947 | 14 |
| 1948 | 16 |
| 1949 | 10 |
| 1950 | 6 |
| 1951 | 10 |
| 1952 | 6 |
| 1954 | 11 |
| 1955 | 8 |
| 1956 | 5 |
| 1957 | 13 |
| 1958 | 10 |
| 1960 | 7 |
| 1961 | 7 |
| 1962 | 7 |
| 1963 | 13 |
| 1964 | 7 |
| 1965 | 9 |
| 1966 | 9 |
| 1968 | 6 |
| 1969 | 6 |
| 1970 | 10 |
| 1971 | 6 |
| 1972 | 7 |
| 1990 | 5 |
| 1994 | 5 |