Year	% of GDP
1960	27.27895819054147
1961	24.293785310734464
1962	17.145421903052064
1963	13.242615333554596
1964	15.813117699910153
1965	19.310344827586206
1966	22.19650205761317
1967	24.68845520808841
1968	20.89227421109902
1969	19.655034095467308
1970	21.023151605675878
1971	18.223719198723632
1972	18.0710829300851
1973	24.00744416873449
1974	20.749973813763486
1975	29.498947368421053
1976	33.53578030102984
1977	25.784653685427223
1978	19.089689989745207
1979	24.50795565945253
1980	29.774535809018566
1981	29.492800844884208
1982	24.96542185338866
1983	21.389645776566756
1984	27.42032306552477
1985	29.846153846153843
1986	33.778803399944856
1987	27.798560351120567
1988	18.028033301789108
1989	18.867378637021023
1990	27.71146100394999
1991	39.76315043884412
1992	51.751326229297725
1993	40.428141363913134
1994	27.222877791562045
1995	33.22868326377565
1996	31.857206930312927
1997	31.887941991699307
1998	28.92075511538046
1999	24.997954716344378
2000	23.775982489198512
2001	21.570344697827203
2002	20.86049902544532
2003	20.952115865171034
2004	23.545680873330582
2005	32.3339782741868