| Year | Count |
|---|---|
| 1910 | 5 |
| 1912 | 10 |
| 1912 | 20 |
| 1913 | 66 |
| 1914 | 62 |
| 1915 | 18 |
| 1915 | 123 |
| 1916 | 176 |
| 1917 | 10 |
| 1917 | 187 |
| 1918 | 31 |
| 1918 | 182 |
| 1919 | 10 |
| 1919 | 190 |
| 1920 | 136 |
| 1921 | 169 |
| 1922 | 169 |
| 1923 | 167 |
| 1924 | 5 |
| 1924 | 128 |
| 1925 | 122 |
| 1926 | 108 |
| 1927 | 104 |
| 1928 | 5 |
| 1928 | 137 |
| 1929 | 94 |
| 1930 | 120 |
| 1931 | 73 |
| 1932 | 133 |
| 1933 | 91 |
| 1934 | 84 |
| 1935 | 59 |
| 1936 | 65 |
| 1937 | 57 |
| 1938 | 56 |
| 1939 | 53 |
| 1940 | 22 |
| 1941 | 44 |
| 1942 | 57 |
| 1943 | 34 |
| 1944 | 30 |
| 1945 | 27 |
| 1946 | 49 |
| 1947 | 34 |
| 1948 | 16 |
| 1949 | 35 |
| 1950 | 19 |
| 1951 | 41 |
| 1952 | 28 |
| 1953 | 36 |
| 1954 | 40 |
| 1955 | 19 |
| 1956 | 16 |
| 1957 | 13 |
| 1958 | 23 |
| 1966 | 17 |
| 1968 | 5 |
| 1969 | 6 |