Year	% of GDP
1977	42.8745537999989
1978	43.9044572479299
1979	40.4733967387594
1980	46.9216929476658
1981	42.2337451625615
1982	34.7155761414755
1983	33.6112896894432
1984	39.0939287868554
1985	38.9057676284115
1986	44.2626395618979
1987	46.7886318579901
1988	43.5220990766077
1989	41.1430029492931
1990	37.920279553947
1991	43.9662553448263
1992	46.5839723733779
1993	43.7583982981558
1994	40.9774724826692
1995	37.8034094143183
1996	38.2153048701502
1997	37.4709084140064
1998	37.866641238702
1999	35.9482905236547
2000	34.6325098050551
2001	32.1938855447517
2002	30.8566572947457
2003	33.9977397663977
2004	36.6460816731285
2005	39.2324628483565
2006	35.86409124323
2007	32.1878746587615
2008	29.6756802151755
2009	23.0196018901329
2010	27.6740303497231
2011	31.9208525351623
2012	34.8180839526884
2013	38.240521415181
2014	59.1800080590098
2015	56.7323833718745
2016	54.0669967702164