Year	% of GDP
1986	32.3714013158703
1987	39.843910788734
1988	43.5377256442286
1989	43.9119620044496
1990	44.9527024888002
1991	43.7416955243297
1992	43.4054369093825
1993	39.0393011529661
1994	40.5807388764015
1995	39.4277071478434
1996	43.411804237024
1997	42.3315391403919
1998	41.1745226520116
1999	44.5543337624562
2000	44.1022758447941
2001	44.825574629037
2002	49.0974676258993
2003	54.4378385848535
2004	51.6812233642517
2005	54.1656999041227
2006	53.3127419354839
2007	51.5460798974578
2008	48.1143467643468
2009	53.2143751397273
2010	59.3855807431643
2011	56.7878177037686
2012	62.9079788406436
2013	64.1309024020775
2014	66.1940122285473
2015	65.7063511830635
2016	69.8105107640355
2017	73.0696731485312