| Year | Count |
|---|---|
| 1910 | 20 |
| 1911 | 14 |
| 1912 | 20 |
| 1913 | 52 |
| 1914 | 42 |
| 1915 | 56 |
| 1916 | 58 |
| 1917 | 50 |
| 1918 | 59 |
| 1919 | 44 |
| 1920 | 34 |
| 1921 | 25 |
| 1922 | 43 |
| 1923 | 40 |
| 1924 | 42 |
| 1925 | 40 |
| 1926 | 37 |
| 1927 | 59 |
| 1928 | 70 |
| 1929 | 47 |
| 1930 | 62 |
| 1931 | 50 |
| 1932 | 58 |
| 1933 | 52 |
| 1934 | 34 |
| 1935 | 66 |
| 1936 | 22 |
| 1937 | 27 |
| 1938 | 11 |
| 1939 | 22 |
| 1940 | 16 |
| 1941 | 17 |
| 1943 | 93 |
| 1950 | 18 |
| 1951 | 20 |
| 1952 | 13 |
| 1953 | 18 |
| 1954 | 12 |
| 1955 | 7 |
| 1956 | 10 |
| 1957 | 14 |
| 1958 | 6 |
| 1959 | 10 |
| 1960 | 11 |
| 1967 | 7 |
| 1968 | 9 |
| 1969 | 6 |
| 1971 | 10 |
| 1972 | 7 |
| 1973 | 7 |
| 1974 | 5 |
| 1975 | 5 |
| 1976 | 5 |
| 1977 | 5 |
| 1978 | 6 |
| 1982 | 11 |
| 1983 | 7 |
| 1984 | 5 |
| 1985 | 10 |
| 1986 | 10 |