8.8650% 1978 1.915116 0.522162 7.2813% 1977 4.398661 0.227342 6.6558% 1976 8.526894 0.117276 6.4073% 1975 0.371952 2.688519 9.8159% 1974 0.366343 2.729680 9.0909% 1973 7.388400 0.135347 6.4509% 1972 1.107138 0.903230 4.7304% 1971 5.692546 0.175668 5.7132% 1970 4.421254 0.226180 5.5272% 1969 2.726133 0.366820 5.5714% 1968
billion