| Year | Count |
|---|---|
| 1912 | 5 |
| 1913 | 36 |
| 1914 | 84 |
| 1915 | 130 |
| 1916 | 104 |
| 1917 | 105 |
| 1918 | 143 |
| 1919 | 111 |
| 1920 | 142 |
| 1921 | 119 |
| 1922 | 123 |
| 1923 | 98 |
| 1924 | 127 |
| 1925 | 99 |
| 1926 | 140 |
| 1927 | 127 |
| 1928 | 128 |
| 1929 | 98 |
| 1930 | 121 |
| 1931 | 204 |
| 1932 | 147 |
| 1933 | 71 |
| 1934 | 124 |
| 1935 | 109 |
| 1936 | 119 |
| 1937 | 131 |
| 1938 | 104 |
| 1939 | 88 |
| 1940 | 81 |
| 1941 | 148 |
| 1942 | 149 |
| 1943 | 110 |
| 1944 | 93 |
| 1945 | 71 |
| 1946 | 66 |
| 1947 | 84 |
| 1948 | 92 |
| 1949 | 125 |
| 1950 | 42 |
| 1951 | 53 |
| 1952 | 56 |
| 1953 | 39 |
| 1954 | 28 |
| 1955 | 46 |
| 1956 | 49 |
| 1957 | 10 |
| 1962 | 15 |
| 1963 | 5 |
| 1964 | 5 |