| Year | Count |
|---|---|
| 1910 | 47 |
| 1911 | 37 |
| 1912 | 56 |
| 1913 | 69 |
| 1914 | 40 |
| 1915 | 119 |
| 1916 | 122 |
| 1917 | 85 |
| 1918 | 117 |
| 1919 | 95 |
| 1920 | 101 |
| 1921 | 133 |
| 1922 | 47 |
| 1923 | 37 |
| 1924 | 64 |
| 1925 | 99 |
| 1926 | 135 |
| 1927 | 76 |
| 1928 | 60 |
| 1929 | 37 |
| 1930 | 35 |
| 1931 | 53 |
| 1932 | 40 |
| 1933 | 89 |
| 1934 | 77 |
| 1935 | 57 |
| 1936 | 31 |
| 1937 | 49 |
| 1938 | 44 |
| 1939 | 5 |
| 1940 | 21 |
| 1941 | 61 |
| 1943 | 29 |
| 1944 | 26 |
| 1945 | 32 |
| 1946 | 22 |
| 1947 | 29 |
| 1948 | 29 |
| 1949 | 67 |
| 1950 | 31 |
| 1951 | 73 |
| 1952 | 10 |
| 1953 | 18 |
| 1954 | 20 |
| 1955 | 47 |
| 1956 | 41 |
| 1957 | 12 |
| 1958 | 38 |
| 1959 | 12 |
| 1960 | 30 |
| 1961 | 40 |
| 1962 | 5 |
| 1963 | 27 |
| 1964 | 44 |
| 1965 | 73 |
| 1966 | 7 |
| 1967 | 22 |
| 1970 | 5 |