Year	Percent of GDP
2004-01-01	12.1149
2005-01-01	14.3805
2006-01-01	16.7037
2007-01-01	19.0582
2008-01-01	20.3027
2009-01-01	22.8169
2010-01-01	25.0837
2011-01-01	25.0650
2012-01-01	25.1038
2013-01-01	24.1222
2014-01-01	22.6104
2015-01-01	22.0093
2016-01-01	22.0146
2017-01-01	23.3548