| Year | Count |
|---|---|
| 1911 | 5 |
| 1913 | 10 |
| 1914 | 16 |
| 1915 | 24 |
| 1916 | 28 |
| 1917 | 49 |
| 1918 | 68 |
| 1919 | 49 |
| 1920 | 73 |
| 1921 | 99 |
| 1922 | 78 |
| 1923 | 64 |
| 1924 | 93 |
| 1925 | 52 |
| 1926 | 66 |
| 1927 | 37 |
| 1928 | 37 |
| 1929 | 55 |
| 1930 | 26 |
| 1931 | 31 |
| 1932 | 47 |
| 1933 | 54 |
| 1934 | 49 |
| 1935 | 41 |
| 1936 | 39 |
| 1937 | 49 |
| 1938 | 45 |
| 1939 | 43 |
| 1940 | 65 |
| 1941 | 28 |
| 1942 | 38 |
| 1943 | 19 |
| 1944 | 8 |
| 1945 | 5 |
| 1946 | 7 |
| 1947 | 23 |
| 1948 | 12 |
| 1949 | 22 |
| 1950 | 24 |
| 1951 | 10 |
| 1952 | 12 |
| 1956 | 14 |
| 1958 | 10 |
| 1960 | 5 |
| 1962 | 10 |