1973 10 | | | | | | 1960 7 | | | 1966 | | | 1970 | | | | | 1972 | | | 1973 | | 90% | | | 1974 | 1976 208 | 20% 1976 | 28631 1965 | 47.2% 1976 1987 | 1 | 6000 | | 10% | 22% | | | 10 5 | |