Year	% of GDP
1990	54.150090680895
1991	51.6528163385053
1992	51.6030770194471
1993	53.4257232226309
1998	55.2229176326091
1999	51.1918547821399
2002	54.4225643568962
2008	48.8896475742823
2009	47.5754052097082
2010	44.6005106911331
2011	44.1104533374498