| Year | Count |
|---|---|
| 1914 | 5 |
| 1915 | 12 |
| 1916 | 6 |
| 1917 | 5 |
| 1918 | 5 |
| 1920 | 11 |
| 1921 | 7 |
| 1922 | 7 |
| 1923 | 7 |
| 1924 | 8 |
| 1925 | 5 |
| 1929 | 5 |
| 1930 | 6 |
| 1937 | 6 |
| 1940 | 5 |
| 1942 | 7 |
| 1943 | 5 |
| 1948 | 6 |
| 1949 | 6 |
| 1950 | 5 |
| 1951 | 5 |
| 1952 | 10 |
| 1953 | 5 |
| 1954 | 9 |
| 1955 | 7 |
| 1956 | 8 |
| 1958 | 6 |
| 1959 | 5 |
| 1960 | 9 |
| 1961 | 6 |
| 1963 | 6 |
| 1964 | 6 |
| 1965 | 7 |
| 1967 | 6 |
| 1969 | 7 |
| 1970 | 7 |
| 1983 | 5 |
| 1987 | 5 |