Year	% of GDP
1995	18.741600147453095
1996	17.80261637330861
1997	16.496247194253694
1998	13.180520553706748
1999	12.555205962970692
2000	15.119779341083076
2001	16.788254782557825
2002	15.465170583075574
2003	15.95417703274133
2004	16.104829167340405
2005	14.023654729351884
2006	14.808751268258474
2007	16.593848875252974
2008	20.18101929791563
2009	21.776559388474546
2010	19.838926176287956
2011	18.43155830754899
2012	18.999817893086103
2013	19.593774411973854
2014	17.90247961533595
2015	17.172040392406068
2016	17.190191924182486
2017	18.124354169933106
2018	16.946736693121718
2019	16.658672455188157
2020	16.495452159846774
2021	16.15303787575108