Year	% of GDP
2001	19.03909232947109
2002	18.31529913800841
2003	19.752176964075026
2004	20.1860176734505
2005	22.082570411257343
2006	24.104049959011913
2007	22.537141624751538
2008	24.138032820179646
2009	22.84066237162712
2010	22.30155267631963
2011	22.33117741187507
2012	21.87394771778854
2013	21.3837807730533
2014	21.73373526977623
2015	22.196224132115415
2016	21.515321390737608
2017	19.746033321821255
2018	20.324413316585712
2019	19.56609876616114