Year	Percent of GDP
2004-01-01	18.4924
2005-01-01	14.7886
2006-01-01	17.1578
2007-01-01	17.6458
2008-01-01	18.1901
2009-01-01	17.2955
2010-01-01	17.7378
2011-01-01	18.3954
2012-01-01	19.1676
2013-01-01	20.4235
2014-01-01	20.9168
2015-01-01	25.3085
2016-01-01	23.1368