| Year | Count |
|---|---|
| 1910 | 26 |
| 1911 | 10 |
| 1912 | 32 |
| 1913 | 44 |
| 1914 | 36 |
| 1915 | 38 |
| 1916 | 50 |
| 1917 | 42 |
| 1918 | 62 |
| 1919 | 47 |
| 1920 | 46 |
| 1921 | 45 |
| 1922 | 49 |
| 1923 | 41 |
| 1924 | 54 |
| 1925 | 37 |
| 1926 | 31 |
| 1927 | 70 |
| 1928 | 78 |
| 1929 | 94 |
| 1930 | 80 |
| 1931 | 68 |
| 1932 | 66 |
| 1933 | 52 |
| 1934 | 33 |
| 1935 | 93 |
| 1936 | 31 |
| 1937 | 32 |
| 1938 | 21 |
| 1939 | 24 |
| 1940 | 21 |
| 1941 | 20 |
| 1943 | 105 |
| 1950 | 34 |
| 1951 | 16 |
| 1952 | 18 |
| 1953 | 23 |
| 1954 | 19 |
| 1955 | 11 |
| 1956 | 26 |
| 1957 | 9 |
| 1958 | 8 |
| 1959 | 12 |
| 1960 | 9 |
| 1961 | 16 |
| 1967 | 13 |
| 1968 | 8 |
| 1969 | 8 |
| 1971 | 10 |
| 1972 | 8 |
| 1973 | 7 |
| 1974 | 6 |
| 1977 | 5 |
| 1980 | 5 |
| 1982 | 8 |
| 1985 | 10 |