Year	% of GDP
1970	4.6402835117254035
1971	3.778027652884944
1972	7.002055722195454
1973	10.405739868886958
1974	29.046015097426185
1975	23.744294340898605
1976	22.14115139796181
1977	23.912066879633823
1978	21.225011318327574
1979	2.9682348353754473
1980	27.905890929666306
1981	8.235658366154924
1982	6.737871736573592
1983	9.105053393664367
1984	11.394221669843576
1985	12.592198381598063
1986	8.216860245502641
1987	11.314532081628407
1988	11.095314399081415
1989	16.929905821751593
1990	11.06589572293323
1991	9.159561779602745
1992	12.38801824993352
1993	16.898193014842864
1994	17.750159019636833
1995	17.86287086010826
1996	18.003825774848714
1997	16.489984292057507
1998	11.864001083038985
1999	14.015261175396112
2000	21.700459315631406
2001	17.673658765016608
2002	15.16531219095232
2003	15.183888248804813
2004	17.95357005474598
2005	21.959775669948133
2006	21.713931257406898
2007	21.547857156538726
2008	25.2332584895583
2009	15.920746949235513
2010	19.097751700133273
2011	23.56670964251324
2012	21.648207069969544
2013	18.476472445352975
2014	16.05912819649867
2015	10.917792983538568
2016	11.215932147537728
2017	14.320741805354443
2018	16.511796627403907
2019	14.015968204357105
2020	9.498475871573092
2021	16.04835476467485