Year	% of GDP
1970	20.7080226592579
1971	18.4955473915522
1972	17.298731832641
1973	19.6070946653381
1974	22.3654709827581
1975	20.6338572377284
1976	20.8923954754752
1977	27.7020835176511
1978	25.6470296310827
1979	26.4070824627091
1980	24.5578372972811
1981	23.0617612791376
1982	34.1638708738059
1983	17.9846923209055
1984	24.2608517449921
1985	20.6803296768791
1986	19.9741133715558
1987	28.2397691185205
1988	18.5224501012977
1989	20.7123497317619
1990	23.1365302885403
1991	29.8570477664161
1992	25.5130840660498
1993	31.6638578690229
1994	32.9297314196524
1995	33.5901679902301
1996	29.7871121101737
1997	25.9860553220399
1998	17.722998963462
1999	17.7830510415321
2000	15.5078378964417
2001	12.9135305064194
2002	12.7851274638831
2003	16.9482275121693
2004	21.1992807952769
2005	20.9115520318379
2006	9.70635226744027
2007	10.8075151625848
2008	10.3635572947513
2009	10.7158376277662
2010	14.592203974554
2011	16.5317662843372
2012	16.5328031367272
2013	13.9424805340938
2014	10.7965827875901
2015	8.56443283798628
2016	16.0895528527279
2017	13.161642595363
2018	6.60863781746129
2019	5.96249594118667
2020	13.8985430832365
2021	33.6832711741997