| Year | Count |
|---|---|
| 1917 | 6 |
| 1921 | 5 |
| 1922 | 5 |
| 1923 | 7 |
| 1925 | 6 |
| 1926 | 21 |
| 1927 | 8 |
| 1928 | 7 |
| 1930 | 14 |
| 1930 | 7 |
| 1931 | 8 |
| 1933 | 18 |
| 1934 | 13 |
| 1935 | 6 |
| 1935 | 12 |
| 1936 | 15 |
| 1937 | 8 |
| 1938 | 10 |
| 1939 | 13 |
| 1940 | 8 |
| 1941 | 5 |
| 1942 | 11 |
| 1943 | 8 |
| 1944 | 7 |
| 1946 | 8 |
| 1947 | 6 |
| 1948 | 8 |
| 1949 | 13 |
| 1950 | 5 |
| 1952 | 6 |
| 1954 | 15 |
| 1955 | 21 |
| 1957 | 10 |
| 1958 | 12 |