Year	% of GDP
1962	12.370688690630832
1963	13.035855176086683
1964	13.509030752258933
1965	13.174118506533322
1966	11.788554187989835
1967	12.039322974115203
1968	12.580184357263473
1969	13.299087489782789
1970	15.58626869737135
1971	15.673150287932428
1972	16.534257004255842
1973	17.471742185359073
1974	17.927952013122667
1975	18.423367586902916
1976	19.901229290605396
1977	20.521596047535407
1978	20.55256931665875
1979	20.7127121214814
1980	20.447110842552515
1981	20.987398810599053
1982	21.307035126822157
1983	20.33312803064989
1984	20.38209839870611
1985	19.965066458101933
1986	20.687664183020075
1987	20.775034137505003
1988	20.396883387915608
1989	20.738405353492304
1990	21.017627519745126
1991	19.5247802407681
1992	20.718361492922348
1993	20.459848113698882
1994	19.35557105603049
1995	29.251879241546316
1996	30.904940609424884
1997	31.837340071818748
1998	27.927019213100262
1999	29.498591616363235
2000	27.322443349761922
2001	20.919174898882474
2002	21.424218228629535
2003	21.53680519396474
2004	21.14052293523464
2005	21.351985734154187
2006	22.207891832026412
2007	23.008630770375973
2008	23.442781324658018
2009	24.601162504689118
2010	26.06999608099574
2011	26.871813552804763
2012	27.96607894774753
2013	27.428183622847026
2014	28.589593855337338
2015	29.869690435443474
2016	30.15913892865797
2017	30.64651592523569
2018	30.92750208182732
2019	33.63726337783665
2020	37.759838466027674
2021	38.939971781802505