| Year | Count |
|---|---|
| 1911 | 11 |
| 1912 | 7 |
| 1913 | 11 |
| 1915 | 9 |
| 1916 | 9 |
| 1917 | 12 |
| 1918 | 14 |
| 1919 | 9 |
| 1920 | 16 |
| 1921 | 23 |
| 1922 | 16 |
| 1923 | 14 |
| 1924 | 16 |
| 1925 | 12 |
| 1926 | 21 |
| 1927 | 15 |
| 1928 | 12 |
| 1929 | 10 |
| 1930 | 14 |
| 1931 | 13 |
| 1932 | 5 |
| 1933 | 9 |
| 1934 | 11 |
| 1935 | 10 |
| 1936 | 13 |
| 1937 | 6 |
| 1938 | 6 |
| 1939 | 10 |
| 1940 | 5 |
| 1942 | 5 |
| 1947 | 12 |
| 1948 | 6 |
| 1950 | 10 |
| 1951 | 5 |
| 1955 | 6 |
| 1956 | 5 |
| 1958 | 7 |
| 1959 | 5 |
| 1964 | 5 |