| Year | Count |
|---|---|
| 1912 | 18 |
| 1913 | 25 |
| 1914 | 35 |
| 1915 | 73 |
| 1916 | 105 |
| 1917 | 135 |
| 1918 | 143 |
| 1919 | 141 |
| 1920 | 182 |
| 1921 | 185 |
| 1922 | 180 |
| 1923 | 145 |
| 1924 | 121 |
| 1925 | 142 |
| 1926 | 127 |
| 1927 | 114 |
| 1928 | 126 |
| 1929 | 175 |
| 1930 | 133 |
| 1931 | 94 |
| 1932 | 84 |
| 1933 | 45 |
| 1934 | 65 |
| 1935 | 91 |
| 1936 | 74 |
| 1937 | 56 |
| 1938 | 84 |
| 1939 | 39 |
| 1940 | 43 |
| 1941 | 60 |
| 1942 | 66 |
| 1943 | 53 |
| 1944 | 65 |
| 1945 | 37 |
| 1946 | 13 |
| 1947 | 33 |
| 1948 | 39 |
| 1949 | 30 |
| 1950 | 14 |
| 1951 | 34 |
| 1953 | 17 |
| 1954 | 34 |
| 1955 | 15 |
| 1956 | 16 |
| 1957 | 15 |
| 1958 | 23 |
| 1959 | 20 |
| 1963 | 5 |
| 1965 | 5 |
| 1976 | 10 |