| Year | Count |
|---|---|
| 1910 | 12 |
| 1912 | 12 |
| 1913 | 18 |
| 1914 | 18 |
| 1915 | 22 |
| 1916 | 18 |
| 1917 | 18 |
| 1918 | 14 |
| 1919 | 14 |
| 1920 | 19 |
| 1921 | 12 |
| 1922 | 15 |
| 1923 | 15 |
| 1924 | 13 |
| 1925 | 11 |
| 1926 | 23 |
| 1927 | 34 |
| 1928 | 44 |
| 1929 | 16 |
| 1930 | 28 |
| 1931 | 16 |
| 1932 | 34 |
| 1933 | 26 |
| 1934 | 14 |
| 1935 | 57 |
| 1936 | 14 |
| 1937 | 8 |
| 1938 | 9 |
| 1939 | 12 |
| 1940 | 12 |
| 1941 | 8 |
| 1943 | 42 |
| 1950 | 5 |
| 1951 | 13 |
| 1952 | 17 |
| 1954 | 6 |
| 1955 | 7 |
| 1956 | 9 |
| 1957 | 8 |
| 1958 | 8 |
| 1959 | 7 |
| 1960 | 7 |
| 1961 | 15 |
| 1967 | 7 |
| 1971 | 6 |