Year	% of GDP
1981	73.634760301427
1982	69.2515809733297
1983	70.7832704566151
1984	72.2076951354001
1985	81.4565137614679
1986	83.1088719294062
1987	91.5447875991007
1988	94.8780630105017
1989	101.300625
1990	79.7243268446206
1991	62.3965697173193
1992	31.7050520798779
1993	20.193508619571
1994	17.8254727006797
1995	22.3289885160171
1996	27.5926657709634
1997	18.5549468433457
1998	21.9003612761669
1999	17.6483136936205
2000	13.903213800386
2001	12.91690822326
2002	13.8029286504697
2003	16.3159651329529
2004	17.0222603205793
2005	20.8600619322399
2006	24.1755270265776
2007	33.9591745946768
2008	38.1921193726745
2009	42.9430364550841
2010	48.1258795215117
2011	49.4011806868835
2012	46.7597998355854
2013	41.7890125704333
2014	37.8939080203252
2015	37.5262104118257
2016	33.9117717571295
2017	32.8922203255975
2018	32.9402786591518