| Year | Count |
|---|---|
| 1913 | 5 |
| 1915 | 10 |
| 1918 | 12 |
| 1922 | 7 |
| 1923 | 11 |
| 1924 | 5 |
| 1925 | 7 |
| 1926 | 10 |
| 1927 | 24 |
| 1928 | 22 |
| 1929 | 18 |
| 1930 | 14 |
| 1931 | 24 |
| 1932 | 26 |
| 1933 | 16 |
| 1934 | 13 |
| 1935 | 42 |
| 1937 | 7 |
| 1938 | 6 |
| 1939 | 10 |
| 1941 | 7 |
| 1943 | 18 |
| 1950 | 5 |
| 1951 | 12 |
| 1952 | 10 |
| 1953 | 10 |
| 1954 | 14 |
| 1955 | 10 |
| 1956 | 9 |
| 1957 | 6 |
| 1959 | 6 |
| 1960 | 8 |
| 1961 | 8 |
| 1969 | 6 |
| 1971 | 5 |
| 1978 | 9 |
| 1980 | 5 |
| 1981 | 5 |