| Year | Count |
|---|---|
| 1914 | 10 |
| 1916 | 16 |
| 1917 | 10 |
| 1919 | 7 |
| 1920 | 7 |
| 1921 | 11 |
| 1922 | 21 |
| 1923 | 5 |
| 1924 | 15 |
| 1925 | 11 |
| 1926 | 20 |
| 1927 | 45 |
| 1928 | 43 |
| 1929 | 65 |
| 1930 | 60 |
| 1931 | 35 |
| 1932 | 38 |
| 1933 | 43 |
| 1934 | 24 |
| 1935 | 61 |
| 1936 | 26 |
| 1937 | 32 |
| 1938 | 30 |
| 1939 | 26 |
| 1940 | 21 |
| 1941 | 16 |
| 1943 | 63 |
| 1944 | 5 |
| 1950 | 20 |
| 1951 | 28 |
| 1952 | 15 |
| 1953 | 21 |
| 1954 | 26 |
| 1955 | 23 |
| 1956 | 26 |
| 1957 | 14 |
| 1958 | 12 |
| 1959 | 10 |
| 1960 | 15 |
| 1961 | 8 |
| 1967 | 7 |
| 1968 | 16 |
| 1969 | 12 |
| 1970 | 11 |
| 1971 | 15 |
| 1972 | 16 |
| 1973 | 11 |
| 1974 | 13 |
| 1975 | 10 |
| 1976 | 7 |
| 1978 | 11 |
| 1979 | 7 |
| 1980 | 10 |
| 1981 | 7 |
| 1982 | 7 |
| 1984 | 13 |
| 1985 | 10 |
| 1987 | 12 |
| 1995 | 8 |
| 1996 | 7 |
| 2005 | 10 |
| 2022 | 5 |
| 2023 | 6 |