| Year | Count |
|---|---|
| 1910 | 16 |
| 1911 | 12 |
| 1912 | 16 |
| 1913 | 18 |
| 1914 | 22 |
| 1915 | 50 |
| 1916 | 26 |
| 1917 | 26 |
| 1918 | 38 |
| 1919 | 26 |
| 1920 | 29 |
| 1921 | 32 |
| 1922 | 33 |
| 1923 | 31 |
| 1924 | 37 |
| 1925 | 47 |
| 1926 | 29 |
| 1927 | 58 |
| 1928 | 66 |
| 1929 | 56 |
| 1930 | 48 |
| 1931 | 62 |
| 1932 | 56 |
| 1933 | 48 |
| 1934 | 25 |
| 1935 | 69 |
| 1936 | 17 |
| 1937 | 20 |
| 1938 | 20 |
| 1939 | 14 |
| 1940 | 13 |
| 1941 | 15 |
| 1943 | 78 |
| 1950 | 14 |
| 1951 | 14 |
| 1952 | 15 |
| 1953 | 13 |
| 1954 | 20 |
| 1955 | 15 |
| 1956 | 9 |
| 1957 | 8 |
| 1958 | 7 |
| 1959 | 10 |
| 1960 | 7 |
| 1961 | 10 |
| 1969 | 6 |
| 1970 | 5 |
| 1972 | 6 |
| 1973 | 5 |
| 1974 | 7 |
| 1977 | 5 |
| 1979 | 5 |
| 1980 | 5 |
| 1981 | 9 |
| 1996 | 5 |