| Year | Count |
|---|---|
| 1915 | 5 |
| 1916 | 5 |
| 1918 | 8 |
| 1920 | 8 |
| 1922 | 10 |
| 1923 | 20 |
| 1924 | 32 |
| 1925 | 10 |
| 1926 | 10 |
| 1927 | 10 |
| 1928 | 10 |
| 1929 | 10 |
| 1930 | 20 |
| 1931 | 7 |
| 1932 | 5 |
| 1933 | 7 |
| 1937 | 7 |
| 1938 | 7 |
| 1939 | 11 |
| 1940 | 8 |
| 1942 | 10 |
| 1943 | 11 |
| 1944 | 11 |
| 1945 | 8 |
| 1946 | 10 |
| 1947 | 12 |
| 1948 | 10 |
| 1949 | 10 |
| 1950 | 5 |
| 1951 | 6 |
| 1952 | 7 |
| 1954 | 6 |
| 1957 | 10 |
| 1958 | 16 |
| 1960 | 16 |
| 1964 | 6 |