| Year | Count |
|---|---|
| 1920 | 5 |
| 1922 | 5 |
| 1924 | 23 |
| 1927 | 12 |
| 1928 | 5 |
| 1929 | 6 |
| 1930 | 6 |
| 1931 | 15 |
| 1931 | 17 |
| 1932 | 6 |
| 1933 | 8 |
| 1934 | 5 |
| 1935 | 7 |
| 1936 | 7 |
| 1937 | 28 |
| 1938 | 7 |
| 1939 | 5 |
| 1940 | 20 |
| 1941 | 10 |
| 1942 | 44 |
| 1943 | 38 |
| 1944 | 41 |
| 1945 | 5 |
| 1946 | 38 |
| 1947 | 48 |
| 1948 | 23 |
| 1949 | 5 |
| 1949 | 11 |
| 1950 | 16 |
| 1950 | 17 |
| 1951 | 52 |
| 1951 | 7 |
| 1952 | 17 |
| 1952 | 25 |
| 1953 | 21 |
| 1953 | 24 |
| 1954 | 17 |
| 1954 | 11 |
| 1955 | 10 |
| 1955 | 7 |
| 1956 | 5 |
| 1956 | 12 |
| 1958 | 15 |
| 1959 | 5 |
| 1960 | 6 |
| 1961 | 5 |
| 1962 | 10 |
| 1963 | 6 |
| 1964 | 8 |
| 1965 | 5 |
| 1966 | 11 |
| 1990 | 5 |
| 2004 | 15 |
| 2006 | 6 |