| Year | Count |
|---|---|
| 1914 | 5 |
| 1916 | 5 |
| 1917 | 6 |
| 1918 | 5 |
| 1919 | 7 |
| 1920 | 6 |
| 1923 | 5 |
| 1924 | 15 |
| 1925 | 5 |
| 1926 | 5 |
| 1927 | 6 |
| 1928 | 5 |
| 1930 | 5 |
| 1931 | 29 |
| 1932 | 5 |
| 1933 | 5 |
| 1936 | 6 |
| 1937 | 5 |
| 1938 | 5 |
| 1940 | 6 |
| 1941 | 5 |
| 1944 | 10 |
| 1946 | 8 |
| 1947 | 5 |
| 1949 | 5 |
| 1950 | 5 |
| 1951 | 11 |
| 1953 | 11 |
| 1955 | 6 |
| 1956 | 7 |
| 1958 | 5 |
| 1959 | 6 |
| 1960 | 6 |
| 1961 | 7 |