Year	% of GDP
1990	23.680981595092025
1991	22.35212675948004
1992	21.422098292087835
1993	21.80215475024486
1994	21.810955160849584
1995	22.233275304650586
1996	24.039448750066004
1997	22.817910641333246
1998	20.13206129465607
1999	19.153592306652776
2000	16.338461538461537
2001	17.305555555555554
2002	15.942580645161291
2003	16.29
2004	17.64774193548387
2005	19.433333333333334
2006	21.659375
2007	22.079411764705885
2008	21.010526315789473
2009	23.33888888888889
2010	26.514285714285712
2011	25.826315789473686
2012	19.624736842105264
2013	19.0145
2014	18.24418604651163
2015	15.916326530612245