Year	% of GDP
1987	3.95376778715678
1988	7.101610415695279
1989	7.286512654397891
1990	7.91085687045644
1991	5.59531724614442
1992	3.37458835450367
1993	2.25869469121191
1994	2.6493553048719
2003	2.12864112884164
2004	2.0143798397051897
2005	1.78096085234042
2006	1.93836458436365
2007	2.30475733676407
2008	2.1563729272725403
2009	2.26520866993266
2010	2.3050493366477802
2011	1.98209994676029
2012	2.15688636813921
2013	2.17684979502056
2014	2.2855076468007
2015	2.3611556974687
2016	2.44296075294715
2017	2.26796977611754
2018	2.2845698600506203