Year	% of GDP
1977	51.377389267209
1978	60.889300966678
1979	60.3404379863078
1980	57.8329999149829
1981	44.3903620557118
1982	42.9567271376593
1983	47.206628443993
1984	45.2330590212767
1985	45.6450547419206
1986	54.7330652578014
1987	53.6335124574297
1988	62.294196331762
1989	57.9734564778553
1990	54.9690315296711
1991	53.6998126954744
1992	54.653966228912
1993	54.9703637828424
1994	53.2655489734884
1995	56.3797527028619
1996	50.0352566095974
1997	49.7379325520269
1998	48.9562243192793
1999	46.318026738893
2000	44.9437264539181
2001	40.9658764761589
2002	39.5719401512647
2003	44.0181375809048
2004	44.9435062563624
2005	51.6685310326896
2006	38.799587964933
2007	35.7289231225453
2008	41.6608990603702
2009	42.5379283035176
2010	43.5154985267544
2011	39.6632607930175
2012	41.9895626643383
2013	41.0346759765953
2014	40.7019143008147
2015	38.2223285759237
2016	36.2923515980558