| Year | Count |
|---|---|
| 1922 | 12 |
| 1923 | 16 |
| 1924 | 22 |
| 1925 | 38 |
| 1926 | 18 |
| 1927 | 18 |
| 1928 | 26 |
| 1929 | 10 |
| 1930 | 12 |
| 1933 | 5 |
| 1934 | 7 |
| 1936 | 5 |
| 1937 | 9 |
| 1941 | 5 |
| 1945 | 8 |
| 1946 | 9 |
| 1947 | 9 |
| 1948 | 5 |
| 1949 | 8 |
| 1950 | 6 |
| 1951 | 7 |
| 1952 | 7 |
| 1954 | 9 |
| 1955 | 5 |
| 1956 | 7 |
| 1957 | 14 |
| 1958 | 14 |
| 1959 | 10 |
| 1960 | 10 |
| 1961 | 7 |
| 1963 | 7 |
| 1965 | 6 |
| 1967 | 7 |
| 1968 | 6 |
| 1969 | 5 |
| 1972 | 6 |
| 1983 | 5 |
| 1994 | 5 |