Year	% of GDP
1985	25.768354786984
1986	29.2137117401715
1987	27.7540350380096
1988	24.3730428332359
1989	27.5158672062051
1990	28.3077656745903
1991	29.6301514750002
1994	28.8031467222858
1995	25.8801909169302
1996	25.3810340373602
1997	25.3669477184252
1998	26.9738146871515
1999	26.0372675668857
2000	26.5566979090037
2001	28.3523716851101
2002	22.7774158718126
2003	24.2108920847963
2004	23.0119363313462
2005	23.7818569518569
2006	23.2869360542342
2007	20.108394683983
2008	21.3582350172095
2009	22.4414591825447
2010	21.0697389113119
2011	20.2904042903348
2012	19.983753346821
2013	22.5599310020519
2014	22.8810390155827
2015	22.7552944174051
2016	21.3338572279241
2017	20.0077161537426