Year	% of GDP
1990	21.242238641763738
1991	21.409866089075848
1992	24.626052776032036
1993	26.369806882576093
1994	28.05075522565547
1995	27.578788859694065
1996	29.36364660677264
2002	50.58769193878489
2003	66.86593746931555
2004	78.8986244752784
2005	69.97580830857318
2006	67.36618144275593
2007	64.36059893673811
2008	62.2672540359032
2009	65.20254995540817
2010	64.40432585943554
2011	62.84934721046219
2012	61.704395614155224
2013	61.54051811384774
2014	61.40752321451447