| Year | Count |
|---|---|
| 1914 | 12 |
| 1915 | 5 |
| 1916 | 42 |
| 1917 | 26 |
| 1918 | 47 |
| 1919 | 49 |
| 1920 | 44 |
| 1921 | 20 |
| 1922 | 49 |
| 1923 | 46 |
| 1924 | 37 |
| 1925 | 80 |
| 1926 | 54 |
| 1927 | 95 |
| 1928 | 105 |
| 1929 | 88 |
| 1930 | 31 |
| 1931 | 18 |
| 1932 | 42 |
| 1933 | 47 |
| 1934 | 46 |
| 1935 | 23 |
| 1936 | 8 |
| 1937 | 11 |
| 1938 | 17 |
| 1939 | 12 |
| 1940 | 15 |
| 1941 | 12 |
| 1942 | 10 |
| 1943 | 11 |
| 1945 | 17 |
| 1946 | 8 |
| 1947 | 6 |
| 1949 | 10 |