| Year | Count |
|---|---|
| 1912 | 8 |
| 1913 | 18 |
| 1914 | 14 |
| 1915 | 32 |
| 1916 | 37 |
| 1917 | 23 |
| 1918 | 47 |
| 1919 | 27 |
| 1920 | 19 |
| 1921 | 30 |
| 1922 | 22 |
| 1923 | 11 |
| 1924 | 32 |
| 1925 | 11 |
| 1926 | 35 |
| 1927 | 14 |
| 1928 | 18 |
| 1929 | 22 |
| 1930 | 8 |
| 1931 | 22 |
| 1932 | 21 |
| 1933 | 15 |
| 1934 | 6 |
| 1935 | 6 |
| 1936 | 7 |
| 1937 | 13 |
| 1938 | 6 |
| 1939 | 9 |
| 1940 | 6 |
| 1942 | 5 |
| 1943 | 5 |
| 1944 | 7 |
| 1948 | 5 |
| 1949 | 7 |
| 1954 | 5 |
| 1967 | 5 |
| 1968 | 5 |