| Year | Count |
|---|---|
| 1916 | 6 |
| 1924 | 18 |
| 1925 | 24 |
| 1926 | 22 |
| 1928 | 20 |
| 1929 | 12 |
| 1930 | 10 |
| 1931 | 12 |
| 1932 | 10 |
| 1933 | 7 |
| 1934 | 10 |
| 1936 | 5 |
| 1937 | 9 |
| 1938 | 8 |
| 1939 | 10 |
| 1940 | 5 |
| 1944 | 5 |
| 1945 | 12 |
| 1949 | 7 |
| 1950 | 7 |
| 1951 | 6 |
| 1952 | 5 |
| 1953 | 7 |
| 1955 | 5 |
| 1956 | 6 |
| 1958 | 10 |
| 1959 | 14 |
| 1960 | 14 |
| 1962 | 6 |
| 1963 | 5 |
| 1966 | 5 |
| 1969 | 6 |
| 1972 | 5 |
| 1973 | 6 |
| 1975 | 5 |
| 1978 | 12 |