| Year | Count |
|---|---|
| 1916 | 20 |
| 1917 | 11 |
| 1918 | 5 |
| 1919 | 24 |
| 1920 | 26 |
| 1921 | 31 |
| 1922 | 20 |
| 1923 | 6 |
| 1924 | 13 |
| 1925 | 14 |
| 1926 | 5 |
| 1927 | 20 |
| 1928 | 12 |
| 1929 | 13 |
| 1932 | 12 |
| 1933 | 14 |
| 1934 | 15 |
| 1935 | 23 |
| 1936 | 26 |
| 1937 | 5 |
| 1938 | 23 |
| 1939 | 31 |
| 1940 | 17 |
| 1941 | 14 |
| 1942 | 20 |
| 1943 | 13 |
| 1945 | 5 |
| 1946 | 5 |
| 1947 | 5 |
| 1949 | 5 |
| 1950 | 18 |
| 1951 | 12 |
| 1952 | 14 |
| 1953 | 18 |
| 1954 | 22 |
| 1957 | 5 |
| 1958 | 10 |