| Year | Count |
|---|---|
| 1914 | 8 |
| 1919 | 5 |
| 1920 | 5 |
| 1921 | 10 |
| 1922 | 7 |
| 1923 | 10 |
| 1924 | 8 |
| 1925 | 8 |
| 1926 | 7 |
| 1927 | 6 |
| 1928 | 10 |
| 1929 | 5 |
| 1930 | 9 |
| 1931 | 12 |
| 1932 | 5 |
| 1933 | 11 |
| 1935 | 8 |
| 1936 | 6 |
| 1937 | 5 |
| 1940 | 5 |
| 1945 | 8 |
| 1948 | 6 |
| 1949 | 5 |
| 1950 | 10 |
| 1951 | 6 |
| 1952 | 8 |
| 1955 | 5 |
| 1956 | 5 |
| 1960 | 11 |
| 1962 | 7 |
| 1963 | 6 |
| 1964 | 8 |
| 1969 | 5 |
| 1970 | 6 |
| 1972 | 5 |
| 1975 | 5 |
| 1976 | 5 |
| 1980 | 5 |
| 1982 | 5 |
| 1983 | 5 |
| 1991 | 5 |
| 1992 | 5 |