| Year | Count |
|---|---|
| 1912 | 17 |
| 1914 | 21 |
| 1915 | 41 |
| 1916 | 47 |
| 1917 | 47 |
| 1918 | 109 |
| 1919 | 29 |
| 1920 | 34 |
| 1921 | 21 |
| 1922 | 39 |
| 1923 | 80 |
| 1924 | 51 |
| 1925 | 41 |
| 1926 | 48 |
| 1927 | 53 |
| 1928 | 56 |
| 1929 | 63 |
| 1930 | 57 |
| 1931 | 105 |
| 1932 | 76 |
| 1933 | 56 |
| 1934 | 40 |
| 1935 | 40 |
| 1936 | 25 |
| 1937 | 45 |
| 1938 | 35 |
| 1939 | 18 |
| 1940 | 51 |
| 1941 | 27 |
| 1942 | 29 |
| 1943 | 82 |
| 1944 | 54 |
| 1945 | 27 |
| 1946 | 76 |
| 1947 | 70 |
| 1948 | 65 |
| 1949 | 108 |
| 1950 | 67 |
| 1951 | 42 |
| 1952 | 31 |
| 1953 | 33 |
| 1954 | 10 |
| 1955 | 21 |
| 1956 | 11 |
| 1957 | 12 |
| 1958 | 15 |
| 1959 | 15 |
| 1960 | 27 |
| 1961 | 7 |
| 1962 | 7 |
| 1963 | 11 |
| 1964 | 6 |