Year	% of GDP
1965	10.334590479472816
1966	12.52938675742736
1967	12.264301989373712
1968	13.90588681556604
1969	15.972017602447398
1970	13.323529411764707
1971	14.50143516785224
1972	17.598612917208495
1973	18.182740087212252
1974	19.62133165036289
1975	25.450308297324852
1976	31.923154701718907
1977	35.975271165735016
1978	27.833523727191327
1979	26.640837481397856
1980	28.018334308562515
1981	23.54470407589279
1982	24.00564051869512
1983	23.88833553915215
1984	23.999893817525418
1985	24.05046560528687
1986	22.45804689141725
1987	18.183882485592584
1988	13.970663327008767
1989	16.184439806215654
1990	16.54504934259563
1991	17.97126754053742
1992	23.173586631865025
1993	25.973341711882636
1994	29.958842207385484
1995	27.23481763649897
1996	23.604884947246678
1997	20.851725326562665
1998	20.551234496055383
1999	18.76541340899435
2000	17.254922768932474
2001	20.344802096081345
2002	20.321213868112647
2003	23.244237606396794
2004	21.667215253719537
2005	23.017010988835917
2006	21.519818072710674
2007	20.39431166674419
2008	16.695873467153582
2009	17.915702154754324
2010	20.45890005246044
2011	21.630942718709264
2012	12.788039838113857
2013	14.456279950114629
2014	8.236289503594332
2015	12.963544030398474
2016	7.880459082865593
2017	8.970801755936263
2018	9.030304478918044
2019	7.388676727365256
2020	6.874586264113352
2021	8.703485259653222