| Year | Count |
|---|---|
| 1910 | 12 |
| 1911 | 16 |
| 1912 | 39 |
| 1913 | 28 |
| 1914 | 55 |
| 1915 | 120 |
| 1916 | 81 |
| 1917 | 134 |
| 1918 | 385 |
| 1919 | 373 |
| 1920 | 179 |
| 1921 | 148 |
| 1922 | 62 |
| 1923 | 76 |
| 1924 | 64 |
| 1925 | 82 |
| 1926 | 8 |
| 1927 | 32 |
| 1928 | 52 |
| 1929 | 24 |
| 1931 | 6 |
| 1932 | 15 |
| 1933 | 5 |
| 1934 | 8 |
| 1935 | 5 |
| 1936 | 8 |
| 1937 | 5 |
| 1939 | 6 |
| 1940 | 7 |
| 1941 | 6 |
| 1946 | 7 |
| 1952 | 5 |
| 1953 | 14 |
| 1957 | 12 |
| 1962 | 10 |
| 1964 | 10 |
| 1970 | 5 |