| Year | Count |
|---|---|
| 1910 | 7 |
| 1912 | 7 |
| 1913 | 25 |
| 1914 | 37 |
| 1915 | 42 |
| 1916 | 42 |
| 1917 | 48 |
| 1918 | 65 |
| 1919 | 53 |
| 1920 | 73 |
| 1921 | 51 |
| 1922 | 49 |
| 1923 | 59 |
| 1924 | 106 |
| 1925 | 51 |
| 1926 | 51 |
| 1927 | 47 |
| 1928 | 71 |
| 1929 | 53 |
| 1930 | 74 |
| 1931 | 44 |
| 1932 | 28 |
| 1933 | 23 |
| 1934 | 25 |
| 1935 | 39 |
| 1936 | 14 |
| 1937 | 26 |
| 1938 | 28 |
| 1939 | 13 |
| 1940 | 14 |
| 1941 | 14 |
| 1944 | 12 |
| 1947 | 5 |
| 1950 | 10 |