| Year | Count |
|---|---|
| 1910 | 95 |
| 1911 | 64 |
| 1912 | 65 |
| 1913 | 63 |
| 1914 | 79 |
| 1915 | 165 |
| 1916 | 156 |
| 1917 | 169 |
| 1918 | 132 |
| 1919 | 145 |
| 1920 | 102 |
| 1921 | 146 |
| 1922 | 125 |
| 1923 | 83 |
| 1924 | 108 |
| 1925 | 131 |
| 1926 | 60 |
| 1927 | 89 |
| 1928 | 86 |
| 1929 | 84 |
| 1930 | 63 |
| 1931 | 39 |
| 1932 | 35 |
| 1933 | 67 |
| 1934 | 43 |
| 1935 | 54 |
| 1936 | 22 |
| 1937 | 28 |
| 1938 | 25 |
| 1939 | 50 |
| 1940 | 16 |
| 1941 | 12 |
| 1942 | 13 |
| 1943 | 12 |
| 1944 | 25 |
| 1946 | 7 |
| 1947 | 5 |
| 1948 | 17 |
| 1949 | 6 |
| 1951 | 12 |
| 1953 | 6 |
| 1956 | 5 |
| 1959 | 5 |
| 1962 | 6 |
| 1965 | 7 |
| 1966 | 5 |
| 1967 | 6 |
| 1968 | 6 |
| 1971 | 11 |
| 1972 | 7 |
| 1974 | 5 |
| 1976 | 5 |
| 1978 | 5 |
| 1980 | 10 |
| 1981 | 6 |
| 1986 | 12 |