| Year | Count |
|---|---|
| 1911 | 10 |
| 1912 | 5 |
| 1913 | 7 |
| 1914 | 50 |
| 1915 | 45 |
| 1916 | 88 |
| 1917 | 50 |
| 1918 | 100 |
| 1919 | 102 |
| 1920 | 119 |
| 1921 | 114 |
| 1922 | 140 |
| 1923 | 101 |
| 1924 | 99 |
| 1925 | 125 |
| 1926 | 87 |
| 1927 | 100 |
| 1928 | 90 |
| 1929 | 97 |
| 1930 | 147 |
| 1931 | 80 |
| 1932 | 101 |
| 1933 | 99 |
| 1934 | 95 |
| 1935 | 91 |
| 1936 | 48 |
| 1937 | 112 |
| 1938 | 90 |
| 1939 | 53 |
| 1940 | 86 |
| 1941 | 74 |
| 1942 | 77 |
| 1943 | 54 |
| 1944 | 39 |
| 1945 | 31 |
| 1946 | 30 |
| 1947 | 18 |
| 1948 | 42 |
| 1949 | 55 |
| 1950 | 51 |
| 1951 | 20 |
| 1952 | 15 |
| 1953 | 21 |
| 1954 | 5 |
| 1955 | 5 |
| 1956 | 15 |
| 1957 | 6 |
| 1959 | 6 |