1983 3.158043 0.316652 3.8998% 1982 13.513340 0.074001 6.3831% 1981 0.398313 2.510591 9.6843% 1980 10.082464 0.099182 9.0330% 1979 0.669508 1.493634 8.8650% 1978 2.831373 0.353186 7.2813% 1977 9.478705 0.105500 6.6558% 1976