| Year | Count |
|---|---|
| 1916 | 20 |
| 1917 | 25 |
| 1918 | 44 |
| 1919 | 11 |
| 1920 | 6 |
| 1921 | 22 |
| 1922 | 10 |
| 1923 | 53 |
| 1924 | 40 |
| 1925 | 44 |
| 1926 | 28 |
| 1927 | 21 |
| 1928 | 27 |
| 1929 | 17 |
| 1930 | 33 |
| 1931 | 6 |
| 1932 | 10 |
| 1933 | 20 |
| 1934 | 5 |
| 1935 | 23 |
| 1936 | 21 |
| 1937 | 14 |
| 1938 | 59 |
| 1939 | 43 |
| 1940 | 19 |
| 1941 | 27 |
| 1942 | 82 |
| 1943 | 69 |
| 1944 | 57 |
| 1945 | 33 |
| 1946 | 31 |
| 1947 | 46 |
| 1948 | 26 |
| 1949 | 71 |
| 1950 | 42 |
| 1951 | 26 |
| 1952 | 21 |
| 1953 | 50 |
| 1954 | 30 |
| 1955 | 41 |
| 1956 | 64 |
| 1957 | 67 |
| 1958 | 15 |
| 1959 | 11 |
| 1960 | 15 |
| 1969 | 21 |
| 1975 | 10 |
| 1980 | 15 |