| Year | Count |
|---|---|
| 1914 | 10 |
| 1921 | 6 |
| 1922 | 21 |
| 1923 | 20 |
| 1925 | 31 |
| 1927 | 18 |
| 1928 | 5 |
| 1929 | 6 |
| 1930 | 30 |
| 1931 | 9 |
| 1932 | 7 |
| 1933 | 20 |
| 1935 | 36 |
| 1936 | 22 |
| 1937 | 5 |
| 1939 | 5 |
| 1940 | 15 |
| 1941 | 30 |
| 1942 | 5 |
| 1943 | 13 |
| 1944 | 6 |
| 1945 | 12 |
| 1946 | 29 |
| 1947 | 27 |
| 1948 | 37 |
| 1949 | 15 |
| 1950 | 25 |
| 1951 | 7 |
| 1952 | 25 |
| 1953 | 25 |
| 1954 | 17 |
| 1955 | 16 |
| 1956 | 17 |
| 1957 | 37 |
| 1959 | 10 |
| 1961 | 16 |
| 1962 | 5 |
| 1963 | 20 |
| 1966 | 12 |