Year	% of GDP
1990	4.747491486908119
1991	4.785938624110931
1992	4.840687221234311
1993	4.68857543500845
1994	4.609972936410185
1995	4.217178514432226
1996	3.963849054882499
1997	3.9555060800279644
1998	5.672233533618759
1999	5.645462655240808
2000	5.188140026704227
2001	5.436740423152032
2002	5.419594593197138
2003	5.300090185871978
2004	5.221706832308692
2005	5.211129011398561
2006	5.422603928711088
2007	4.975433993164838
2008	5.302472546400818
2009	5.834446734656882
2010	5.555496237452738
2011	5.4531932275966986
2012	5.493866104290718
2013	5.945045740398025
2014	5.628372684591509
2015	5.864833979200316
2016	5.909088976022999
2017	5.603544794408735