| | | | | | | | 1953 | | | 1958 | | | | | 1986 | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1990 | 1958 | 1986 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1960 1961 | | | | | | | | | | | | | 1969 | | | | | | | | 20% 1979 | 80% | | 1980 50% | | 1983 | | | 1984 | | |