| Year | Count |
|---|---|
| 1917 | 5 |
| 1919 | 5 |
| 1920 | 5 |
| 1923 | 5 |
| 1924 | 21 |
| 1926 | 15 |
| 1927 | 11 |
| 1929 | 6 |
| 1931 | 7 |
| 1933 | 11 |
| 1936 | 10 |
| 1937 | 5 |
| 1938 | 11 |
| 1942 | 16 |
| 1944 | 10 |
| 1945 | 10 |
| 1946 | 12 |
| 1948 | 6 |
| 1949 | 5 |
| 1950 | 8 |
| 1951 | 17 |
| 1952 | 18 |
| 1953 | 10 |
| 1954 | 35 |
| 1955 | 25 |
| 1956 | 36 |
| 1957 | 22 |
| 1958 | 26 |
| 1959 | 10 |
| 1960 | 25 |
| 1962 | 5 |
| 1964 | 16 |
| 2008 | 6 |
| 2017 | 5 |