Year	% of GDP
1981	9.83410042991252
1982	12.3520862840215
1983	21.1476215145338
1984	35.6402655783847
1985	47.8676182750954
1986	41.7578429470648
1987	42.1796032585384
1988	49.4053981352869
1989	29.8771550402193
1990	34.5683685054204
1991	38.9011714776956
1992	44.4508701577235
1993	46.9493627894231
1994	52.1081015577936
1995	52.8108834625827
1996	56.6715379530974
1997	54.7714737753312
1998	60.9998088693227
1999	52.0639789444176
2000	40.7160846453485
2001	60.2620725295254
2002	64.6327323823182
2003	65.493657804988
2004	59.4826609059146
2005	60.2574128552798
2006	50.5428748292759
2007	66.1713094673482
2008	60.1307374423235
2009	68.0985438065891
2010	67.1587333412833
2011	67.1888042562737
2012	59.8193621711466
2013	74.0223771206555
2014	72.9607613291471
2015	79.0404168749137
2016	81.5352815516568
2017	79.9056647540724