| 1951 | | | 69 | 147 | |
| 1952 | | | 69 | 97 | |
| 1953 | | | 68 | 153 | |
| 1954 | | | 68 | 111 | |
| 1955 | | | 68 | 145 | |
| 1956 | | | 68 | 235 | |
| 1957 | | | 68 | 110 | |
| 1958 | | | 68 | 144 | |
| 1959 | | | 68 | 90 | |
| 1960 | | | 68 | 176 | |
| 1961 | | | 68 | 87 | |
| 1962 | | | 68 | 100 | |
| 1963 | | | 68 | 148 | |
| 1964 | | | 68 | 169 | |
| 1965 | | | 68 | 89 | |
| 1966 | | | 68 | 96 | |
| 1967 | | | 68 | 150 | |
| 1968 | | | 68 | 502 | |
| 1969 | | | 68 | 193 | |
| 1970 | | | 68 | 98 | |
| 1971 | | | 68 | 145 | |
| 1972 | | | 67 | 103 | |
| 1973 | | | 67 | 220 | |
| 1974 | | | 67 | 143 | |
| 1975 | | | 67 | 95 | |
| 1976 | | | 67 | 142 | |
| 1977 | | | 67 | 271 | |
| 1978 | | | 67 | 147 | |
| 1979 | | | 67 | 91 | |
| 1980 | | | 67 | 101 | |
| 1981 | | | 67 | 95 | |
| 1982 | | | 66 | 177 | |
| 1983 | | | 66 | 117 | |
| 1984 | | | 66 | 126 | |
| 1985 | | | 66 | 75 | |
| 1986 | | | 66 | 193 | |
| 1987 | | | 66 | 188 | |
| 1988 | | | 66 | 298 | |
| 1989 | | | 66 | 236 | |
| 1990 | | | 66 | 66 | |
| 1991 | | | 65 | 152 | |
| 1992 | | | 65 | 82 | |
| 1993 | | | 65 | 119 | |
| 1994 | | | 65 | 98 | |
| 1995 | | | 65 | 119 | |
| 1996 | | | 65 | 242 | |
| 1997 | | | 65 | 115 | |
| 1998 | | | 65 | 215 | |
| 1999 | | | 65 | 87 | |
| 2000 | | | 65 | 92 | |
