Year	% of GDP
1978	31.283382756883306
1979	31.374495772657674
1980	26.02963940920472
1981	30.443068178058354
1982	30.30448316343116
1983	36.33599009283087
1984	32.467549173957764
1985	35.834055337897766
1986	29.5639263975813
1987	26.421981092949643
1988	26.703441015480443
1989	28.418569780571527
1990	20.970011110510146
1991	22.313330081169163
1992	22.75275967177179
1993	30.462909537593507
1994	24.966019539485533
1995	21.31179972410165
1996	20.181097215285845
1997	22.218037360707335
1998	26.961852571758566
1999	24.514035647897643
2000	20.254320467619618
2001	17.41045626839687
2002	15.555053389355958
2003	15.365204215841233
2004	14.015678540163885
2005	12.308241326597813
2007	9.41481500830688
2008	11.4201928235195
2009	15.612420476813133
2010	15.86474717964582
2011	15.839685635603097
2012	15.529248141095199
2013	16.89579651762626
2014	13.868905889196196
2015	14.984550151426934