Year	% of GDP
1960	9.666397037510155
1961	9.634757499360468
1962	9.678076888570008
1963	9.60553407805852
1964	9.978641098312586
1965	11.18961477285753
1966	11.45017406440383
1967	12.02287147001076
1968	12.1728515625
1969	12.352519536628872
1970	10.87894592094867
1971	11.399051811913493
1972	12.63480402197829
1973	15.041010241296348
1974	21.94836969237236
1975	21.15240769367485
1976	27.693145693845022
1977	21.424418604651162
1978	28.709480905198774
1979	23.01613800779076
1980	42.47160611268093
1981	27.557132535364527
1982	29.274150060114735
1983	22.374674007230492
1984	24.226945503027967
1985	29.824264534310917
1986	25.576994246554584
1987	33.000985236545446
1988	23.597431608234253
1989	28.01804630708032
1990	13.783028588496984