Year	% of GDP
1980	0.13035506583846246
1981	0.15647049420157635
1982	0.13947950782167812
1983	1.4708268417927444
1984	3.5384021256263747
1985	3.252402136550012
1986	2.160697202326125
1987	10.236866705046985
1988	4.725218522054439
1989	12.696132207508509
1990	12.379774466467786
1991	10.34677525677552
1992	6.970511019034722
1993	13.79118298084758
1994	14.299945978453973
1995	16.106349036586657
1996	21.64663427871414
1997	28.379546265968074
1998	25.818572128835775
1999	30.723913884258756
2000	35.20149595264032
2001	30.327775422350562
2002	18.62581091740216
2003	21.31353400078197
2004	34.50279770955354
2005	45.72233027104656
2006	81.52919562356648
2007	101.28978677207697
2008	58.44479265941685
2009	53.53214001410822
2010	49.186928537651966
2011	36.85782419894237
2012	23.325355413461647
2013	18.351516138218024
2014	20.39523051337815
2015	24.7318298203332
2016	28.39484092517753
2017	29.332617964698432
2018	27.096728516004532
2019	24.881979528693442