| Year | Count |
|---|---|
| 1910 | 10 |
| 1911 | 14 |
| 1912 | 10 |
| 1913 | 20 |
| 1915 | 22 |
| 1916 | 14 |
| 1917 | 5 |
| 1919 | 6 |
| 1920 | 16 |
| 1921 | 7 |
| 1922 | 6 |
| 1923 | 15 |
| 1924 | 11 |
| 1925 | 6 |
| 1926 | 7 |
| 1927 | 34 |
| 1928 | 20 |
| 1929 | 10 |
| 1930 | 28 |
| 1931 | 12 |
| 1932 | 14 |
| 1933 | 20 |
| 1934 | 18 |
| 1936 | 7 |
| 1938 | 7 |
| 1939 | 5 |
| 1940 | 7 |
| 1943 | 42 |
| 1950 | 5 |
| 1951 | 7 |
| 1952 | 6 |
| 1956 | 5 |
| 1968 | 5 |