| Year | Count |
|---|---|
| 1914 | 5 |
| 1916 | 6 |
| 1917 | 23 |
| 1919 | 8 |
| 1920 | 21 |
| 1921 | 6 |
| 1922 | 36 |
| 1923 | 18 |
| 1924 | 13 |
| 1925 | 46 |
| 1927 | 6 |
| 1927 | 19 |
| 1928 | 16 |
| 1929 | 5 |
| 1929 | 14 |
| 1930 | 15 |
| 1930 | 5 |
| 1931 | 5 |
| 1931 | 16 |
| 1932 | 6 |
| 1932 | 32 |
| 1933 | 5 |
| 1933 | 19 |
| 1934 | 7 |
| 1935 | 14 |
| 1935 | 17 |
| 1936 | 6 |
| 1936 | 20 |
| 1937 | 5 |
| 1937 | 20 |
| 1938 | 12 |
| 1938 | 10 |
| 1939 | 8 |
| 1939 | 26 |
| 1940 | 38 |
| 1941 | 6 |
| 1942 | 19 |
| 1943 | 7 |
| 1944 | 14 |
| 1945 | 7 |
| 1945 | 5 |
| 1946 | 6 |
| 1948 | 12 |
| 1949 | 10 |
| 1949 | 10 |
| 1953 | 10 |
| 1954 | 5 |
| 1955 | 18 |