Year	% of GDP
1990	46.0782400065928
1991	40.0798664247923
1992	39.110261614378
1993	38.7140855128288
1994	41.9176711954782
1995	42.1869728632677
1996	42.4791779473501
1997	69.2357248422269
1998	75.5759375399883
1999	75.977301526495
2000	67.110646216378
2001	67.2872422924516
2002	74.1012671313508
2003	84.1257017185762
2004	81.6888044795848
2005	80.9314218874543
2006	76.0054424388838
2007	72.1654647833349
2008	74.9508397654062
2009	70.4173889954074
2010	72.5081979296583
2011	71.1418999938055
2012	73.5277254692284
2013	77.7556139924407
2014	78.1489582374229
2015	72.5706948389853
2016	64.2256657042185
2017	66.3438862827107
2018	78.4272342316474