| Year | Count |
|---|---|
| 1911 | 7 |
| 1912 | 16 |
| 1913 | 14 |
| 1914 | 9 |
| 1915 | 34 |
| 1916 | 28 |
| 1917 | 72 |
| 1918 | 75 |
| 1919 | 111 |
| 1920 | 72 |
| 1921 | 87 |
| 1922 | 63 |
| 1923 | 51 |
| 1924 | 63 |
| 1925 | 87 |
| 1926 | 72 |
| 1927 | 34 |
| 1928 | 22 |
| 1929 | 16 |
| 1930 | 19 |
| 1932 | 44 |
| 1933 | 36 |
| 1934 | 26 |
| 1935 | 22 |
| 1936 | 38 |
| 1937 | 24 |
| 1938 | 44 |
| 1939 | 30 |
| 1940 | 14 |
| 1941 | 14 |
| 1942 | 14 |
| 1943 | 16 |
| 1944 | 17 |
| 1945 | 12 |
| 1948 | 14 |
| 1949 | 22 |
| 1950 | 24 |
| 1951 | 24 |
| 1952 | 12 |
| 1953 | 18 |
| 1954 | 10 |
| 1955 | 14 |
| 1956 | 14 |
| 1957 | 16 |
| 1958 | 12 |
| 1960 | 14 |
| 1961 | 14 |
| 1962 | 14 |
| 1963 | 6 |
| 1964 | 5 |
| 1966 | 10 |
| 1968 | 10 |
| 1974 | 10 |
| 1977 | 12 |
| 1981 | 6 |