Year	% of GDP
1990	47.10999067302883
1991	44.03237344718733
1992	43.45362832186637
1993	47.080928066069355
1994	48.3869318958498
1995	47.3543565678473
1996	35.75514348083439
1997	33.346705240490756
1998	38.372269247960666
1999	31.525569879405673
2000	30.14899542470658
2001	33.57108262373947
2002	34.91099340950273
2003	36.30749770434989
2004	35.060821380227736
2005	32.046120602736295
2006	34.481986688882564
2007	35.20697914111382
2008	31.949362486555028
2009	38.00892401959662
2010	31.90976008371399
2011	31.076495508031126
2012	34.9687113200826
2013	34.74093666558379