| Year | Count |
|---|---|
| 1921 | 10 |
| 1922 | 15 |
| 1924 | 27 |
| 1925 | 15 |
| 1926 | 50 |
| 1927 | 50 |
| 1928 | 57 |
| 1929 | 37 |
| 1930 | 15 |
| 1930 | 52 |
| 1931 | 36 |
| 1932 | 65 |
| 1933 | 5 |
| 1933 | 19 |
| 1934 | 73 |
| 1935 | 62 |
| 1936 | 33 |
| 1937 | 33 |
| 1938 | 12 |
| 1939 | 10 |
| 1940 | 15 |
| 1942 | 20 |
| 1943 | 30 |
| 1946 | 8 |
| 1947 | 7 |
| 1948 | 5 |
| 1950 | 5 |
| 1951 | 11 |
| 1952 | 29 |
| 1953 | 5 |
| 1954 | 13 |
| 1955 | 28 |
| 1956 | 5 |
| 1957 | 21 |