| Year | Count |
|---|---|
| 1910 | 10 |
| 1911 | 9 |
| 1912 | 8 |
| 1913 | 14 |
| 1914 | 11 |
| 1915 | 29 |
| 1916 | 60 |
| 1917 | 36 |
| 1918 | 12 |
| 1918 | 70 |
| 1919 | 75 |
| 1920 | 5 |
| 1920 | 82 |
| 1921 | 5 |
| 1921 | 69 |
| 1922 | 103 |
| 1923 | 83 |
| 1924 | 83 |
| 1925 | 60 |
| 1926 | 62 |
| 1927 | 67 |
| 1928 | 62 |
| 1929 | 54 |
| 1930 | 71 |
| 1931 | 61 |
| 1932 | 21 |
| 1933 | 36 |
| 1934 | 27 |
| 1935 | 28 |
| 1936 | 5 |
| 1937 | 42 |
| 1938 | 35 |
| 1939 | 31 |
| 1940 | 29 |
| 1941 | 26 |
| 1942 | 22 |
| 1943 | 9 |
| 1944 | 21 |
| 1945 | 30 |
| 1946 | 18 |
| 1947 | 21 |
| 1948 | 22 |
| 1949 | 21 |
| 1950 | 25 |
| 1951 | 14 |
| 1953 | 5 |
| 1956 | 10 |
| 1957 | 14 |
| 1958 | 6 |
| 1962 | 14 |