Year	% of GDP
1980	7.6322715548215
1981	9.52830218901871
1982	11.384201417752
1983	11.5999062292234
1984	11.6828746410227
1985	3.45697045757718
1986	7.02615165298184
1987	17.0141708406281
1988	21.4262893047059
1989	21.0055158384787
1990	22.0678097847666
1991	11.0952254131709
1992	13.8262069100128
1993	14.0834231123468
1994	15.9863175713413
1995	19.5671171839321
1996	15.1464244364246
1997	15.1041675211942
1998	13.2468833966883
1999	13.9229863653578
2000	21.648827218289
2001	13.8991277302398
2002	20.3648360122683
2003	15.1181671306247
2004	12.6631101489552
2005	12.9622601885653
2006	12.2687326130264
2007	11.2691421524279
2008	15.1739404440819
2009	14.1005308971754
2010	17.8631373661743
2011	21.5440081278218
2012	35.1276361547951
2013	39.3567826456981
2014	43.0513487766714
2015	31.9581917222606
2016	22.4808388770792
2017	24.5945334807194
2018	25.6761203829052