Year	% of GDP
2001	93.9452002948363
2002	93.5319828247142
2003	99.2469599692128
2004	100.327977239403
2005	104.719695004214
2006	108.617881327506
2007	124.819918700298
2008	137.613264656673
2009	146.288940473017
2010	160.457820730196
2011	164.120481752594
2012	177.391625058499
2013	172.714480520399
2014	172.109026165056
2015	169.730208862084
2016	169.769632813831
2017	165.155467972767
2018	162.910195696426