Year	% of GDP
1985	9.220120731454204
1986	13.023622470686687
1987	5.4336310967959385
1988	5.425155644664873
1989	8.885396620756847
1993	9.42707425105091
1994	4.501800662941738
1995	1.6505388310231552
1996	6.909408964721302
1997	7.955190785238448
1998	10.666186272362843
1999	11.44522333900455
2000	10.259360101105125
2005	3.903636451461654
2006	5.206205404160824
2007	4.545262567648565
2008	2.5932150487593733
2009	2.8946892318439614
2010	3.9717581579782233
2011	4.776231675307371
2012	4.453000053492202
2013	4.147473822700081
2014	3.9107044649252845
2015	4.230732430461581
2016	4.3375097381613