| Year | Count |
|---|---|
| 1910 | 10 |
| 1912 | 9 |
| 1913 | 21 |
| 1914 | 26 |
| 1915 | 29 |
| 1916 | 25 |
| 1917 | 5 |
| 1917 | 17 |
| 1918 | 5 |
| 1918 | 41 |
| 1919 | 35 |
| 1920 | 48 |
| 1921 | 29 |
| 1922 | 47 |
| 1923 | 37 |
| 1924 | 8 |
| 1925 | 20 |
| 1925 | 43 |
| 1926 | 39 |
| 1927 | 18 |
| 1928 | 28 |
| 1929 | 34 |
| 1930 | 50 |
| 1931 | 30 |
| 1932 | 5 |
| 1934 | 31 |
| 1936 | 10 |
| 1938 | 10 |
| 1939 | 32 |
| 1940 | 14 |
| 1941 | 12 |
| 1942 | 28 |
| 1943 | 15 |
| 1944 | 21 |
| 1945 | 12 |
| 1946 | 32 |
| 1947 | 15 |
| 1948 | 6 |
| 1949 | 8 |
| 1950 | 5 |
| 1951 | 6 |
| 1953 | 15 |
| 1954 | 18 |
| 1955 | 33 |
| 1956 | 6 |
| 1957 | 16 |
| 1959 | 12 |
| 1960 | 26 |
| 1963 | 18 |
| 1964 | 10 |
| 1965 | 18 |
| 1966 | 14 |
| 1967 | 10 |
| 1969 | 5 |
| 1970 | 7 |
| 1972 | 5 |
| 1977 | 5 |
| 1981 | 7 |
| 1987 | 5 |
| 1997 | 17 |