Year	Percent of GDP
2004-01-01	45.4795
2005-01-01	49.2138
2006-01-01	54.4704
2007-01-01	62.0075
2008-01-01	70.7821
2009-01-01	74.0904
2010-01-01	68.8242
2011-01-01	73.4521
2012-01-01	69.4451
2013-01-01	71.7243
2014-01-01	75.1089
2015-01-01	78.7786
2016-01-01	81.6326