Year	Percent of GDP
2004-01-01	16.3869
2005-01-01	20.4713
2006-01-01	26.5054
2007-01-01	35.3129
2008-01-01	37.6696
2009-01-01	39.0492
2010-01-01	39.1024
2011-01-01	39.3723
2012-01-01	37.8368
2013-01-01	34.1746
2014-01-01	31.5018
2015-01-01	30.4863
2016-01-01	28.7998
2017-01-01	30.4154