Year	% of GDP
1961	28.133577310155534
1962	27.915951972555742
1963	30.96590909090909
1964	34.299339691856204
1965	37.97591929710381
1966	40.13176740189058
1967	39.62980739609346
1968	40.07385963207303
1969	45.89599589435022
1970	53.93822797740666
1971	58.23863896421685
1972	48.24992954257267
1973	34.820170547720565
1974	39.84154357820601
1975	46.16423815497443
1976	40.780914465285704
1977	46.26877165960724
1978	45.4196538489391
1979	45.589853877872486
1980	53.32241086587436
1981	58.743760409231506
1982	60.49622684655843
1983	53.45157526254376
1984	53.145574698279
1985	52.440078691469886
1986	51.35481475722117
1987	49.672422298722005
1988	51.92265228226239
1989	52.74649505860721
1990	48.946752486834406
1991	52.154981140448186
1992	45.70210750651196
1993	36.94602740851842
1994	39.7680577907166
1995	43.70099439843737
1996	48.39884468777135
1997	50.050452002938016
1998	48.81944230867805
1999	52.88843818671983
2000	49.24347870745085
2001	52.250399661418
2002	58.00329972974132
2003	54.03110268295534
2004	58.91886141335394