Year	% of GDP
1995	25.6533561266267
1996	25.1389998846119
1997	18.1824432879159
1998	20.0445271404916
1999	14.7868906942393
2000	12.1752381884975
2001	10.0103812363552
2002	11.6100107872575
2003	11.6109374329332
2004	8.38417521014682
2005	13.8426498921696
2006	11.602840946537
2007	5.54824312809862
2008	13.8128196665761
2009	11.2299805205968
2010	12.4750545735726
2011	11.1687547801962
2012	12.7661586183103
2013	14.2252491587915
2014	15.8908944981058
2015	19.3362410634071
2016	18.7448524527115
2017	20.092847757735
2018	22.3548526317485