Year	Percent of GDP
1998	42.729
1999	44.377
2000	43.056
2001	41.997
2002	45.34
2003	46.964
2004	48.581
2005	48.569
2006	45.553
2007	38.632
2008	37.921
2009	44.424
2010	48.124
2011	52.543
2012	67.076
2013	78.127
2014	89.453
2015	91.255
2016	86.891
2017	79.497