Year	% of GDP
1991	57.6901525254055
1992	52.8961098061145
1993	55.2722606454111
1994	50.6315048177524
1995	44.2379477272461
1996	44.3612185869255
1997	40.4907240894936
1998	39.3360464962943
1999	38.4189602879101
2000	36.4822719136475
2001	37.734586430228
2002	39.0865079752362
2003	41.7805461162391
2004	39.3525887803364
2005	43.2839584355339
2006	47.7909168918437
2007	53.2193273727479
2008	62.0317963049042
2009	63.957923302226
2010	66.6259367508587
2011	67.4533375675141
2012	65.1677291246328
2013	64.486920605097
2014	64.3757363747243
2015	65.0459686403526
2016	64.9937121470531
2017	62.6228464044598
2018	62.0664427221118