Year	% of GDP
1969	28.369123716469
1970	29.71906673102242
1971	28.342151068163556
1972	25.730666085302182
1973	25.746197131104648
1974	24.602157284570335
1975	22.937670175429204
1976	22.84515563220947
1977	23.782783939767288
1978	23.62467042464956
1979	22.744945279531915
1980	23.613361763697338
1981	20.698298610678787
1982	19.684648793079052
1983	20.54452247843266
1984	21.134395847214247
1985	21.468133879039293
1986	22.717110762325724
1987	22.6261874825716
1988	23.997025042215014
1989	24.759972159324008
1990	24.242847101122113
1991	23.333353535987694
1992	23.324447678203118
1993	21.269068686545378
1994	21.515617589090567
1995	21.72831189481318
1996	22.56133478418571
1997	22.842951827143498
1998	22.943735020733207
1999	23.216810224598827
2000	22.570225682345626
2001	22.718264467783538
2002	21.008626383603684
2003	20.48809500594762
2004	20.321338557981885
2005	20.454071009633626
2006	21.02366622986044
2007	23.34948398662726
2008	22.330878649192364
2009	20.721238329049584
2010	20.22162528336778
2011	20.03970114967272
2012	18.72471154700245
2013	18.51004522584914
2014	17.9126213592233
2015	22.47495681209493
2016	20.487564534960054
2017	20.592674078027922
2018	20.95758714293651
2019	22.09641414172473
2020	21.75649379182203
2021	21.532598120578413
2022	21.23240439455886
2023	20.088948114566875