| Year | Count |
|---|---|
| 1947 | 5 |
| 1948 | 6 |
| 1950 | 5 |
| 1951 | 5 |
| 1954 | 8 |
| 1955 | 7 |
| 1956 | 11 |
| 1957 | 10 |
| 1958 | 17 |
| 1959 | 10 |
| 1960 | 10 |
| 1961 | 8 |
| 1962 | 5 |
| 1963 | 7 |
| 1964 | 26 |
| 1965 | 5 |
| 1966 | 15 |
| 1967 | 30 |
| 1968 | 28 |
| 1969 | 11 |
| 1970 | 84 |
| 1971 | 34 |
| 1972 | 41 |
| 1973 | 20 |
| 1974 | 89 |
| 1975 | 99 |
| 1976 | 61 |
| 1977 | 29 |
| 1978 | 8 |
| 1979 | 5 |
| 1981 | 5 |
| 1982 | 6 |
| 1984 | 5 |
| 1986 | 10 |
| 1987 | 10 |
| 1995 | 5 |
| 1996 | 5 |
| 1997 | 9 |
| 2001 | 10 |
| 2002 | 10 |
| 2004 | 10 |
| 2014 | 10 |
| 2017 | 5 |
| 2022 | 5 |
| 2024 | 10 |