| Year | Count |
|---|---|
| 1910 | 55 |
| 1911 | 33 |
| 1912 | 46 |
| 1913 | 21 |
| 1914 | 51 |
| 1915 | 61 |
| 1916 | 71 |
| 1917 | 64 |
| 1918 | 81 |
| 1919 | 87 |
| 1920 | 45 |
| 1921 | 65 |
| 1922 | 85 |
| 1923 | 46 |
| 1924 | 33 |
| 1925 | 137 |
| 1926 | 92 |
| 1927 | 106 |
| 1928 | 89 |
| 1929 | 31 |
| 1930 | 84 |
| 1931 | 50 |
| 1932 | 93 |
| 1933 | 57 |
| 1934 | 66 |
| 1935 | 55 |
| 1936 | 68 |
| 1937 | 74 |
| 1938 | 28 |
| 1939 | 44 |
| 1940 | 30 |
| 1941 | 22 |
| 1942 | 29 |
| 1943 | 40 |
| 1944 | 26 |
| 1945 | 33 |
| 1946 | 16 |
| 1947 | 14 |
| 1948 | 57 |
| 1949 | 40 |
| 1950 | 39 |
| 1951 | 29 |
| 1952 | 24 |
| 1953 | 23 |
| 1954 | 27 |
| 1955 | 5 |
| 1956 | 8 |
| 1957 | 7 |
| 1958 | 6 |