| | | | | | 300 646 | 4 11 1 5 7 | 1 2 | 425 300 500 | 150 2 5 1300 2000 | 400 470 | | | | | | | | 70% 30% | 5 | | 1949 | | | | | 1953 | | 1956 1960 | 0.20 | 0.26 1961 1964 | | | | 1965 1968 | | | | | | | | | 1200 2000 | 500 | | | | 4000 1990 | 488.5 251.2 | 1684.62 | 1949 1979 | | 0.5 0.15 | | 5% 8% 10 | 1.9 1984 | | | | |