| | | 1949 | | 1953 1.32 1957 | | 1960 10.1 | 1963 1965 4 | 5 | 1966 1968 1969 | 13.9 | | 1978 22.2 1971 14.8 | 1.5 1.05 | 1980 1981 | 1986 | | 1987 11 | | | 1990 | 13.8 1978 38. | 1% | |