Year	Percent of GDP
2004	19.678
2005	19.854
2006	19.042
2007	15.001
2008	13.659
2009	20.971
2010	26.566
2011	32.175
2012	36.7
2013	45.451
2014	46.555
2015	50.374
2016	52.408
2017	51.944