| Year | Count |
|---|---|
| 1910 | 10 |
| 1911 | 16 |
| 1912 | 16 |
| 1913 | 14 |
| 1914 | 15 |
| 1915 | 33 |
| 1916 | 34 |
| 1917 | 38 |
| 1918 | 42 |
| 1919 | 40 |
| 1920 | 24 |
| 1921 | 19 |
| 1922 | 54 |
| 1923 | 50 |
| 1924 | 38 |
| 1925 | 34 |
| 1926 | 32 |
| 1927 | 32 |
| 1928 | 26 |
| 1929 | 28 |
| 1931 | 10 |
| 1932 | 6 |
| 1933 | 11 |
| 1934 | 5 |
| 1935 | 5 |
| 1936 | 8 |
| 1937 | 5 |
| 1938 | 6 |
| 1940 | 5 |
| 1941 | 8 |
| 1943 | 5 |
| 1947 | 6 |
| 1953 | 6 |
| 1956 | 5 |