| Year | Count |
|---|---|
| 1916 | 10 |
| 1917 | 12 |
| 1918 | 10 |
| 1919 | 12 |
| 1920 | 5 |
| 1921 | 15 |
| 1923 | 6 |
| 1924 | 7 |
| 1925 | 33 |
| 1926 | 19 |
| 1927 | 40 |
| 1928 | 59 |
| 1929 | 34 |
| 1930 | 27 |
| 1931 | 62 |
| 1932 | 58 |
| 1933 | 54 |
| 1934 | 38 |
| 1935 | 49 |
| 1936 | 38 |
| 1937 | 20 |
| 1938 | 8 |
| 1939 | 12 |
| 1940 | 8 |
| 1941 | 9 |
| 1942 | 13 |
| 1943 | 8 |
| 1947 | 7 |
| 1949 | 7 |
| 1951 | 5 |
| 1953 | 12 |
| 1954 | 17 |
| 1961 | 10 |