Year	% of GDP
2000	33.6056154387837
2001	22.2306539922134
2002	22.4482192503871
2003	21.8661887420661
2004	24.7815588222405
2005	30.2537565046215
2006	34.8111996530665
2007	27.122755060235
2008	30.8281136055408
2009	21.2495729526678
2010	24.5367648619113
2011	25.9270194439509
2012	27.4088058932512
2013	18.5495321807459
2014	21.4416907635498
2015	16.9927208627155
2016	15.9117416100855
2017	18.5004659580622