Year	Percent of GDP
2004-01-01	19.2120
2005-01-01	20.3557
2006-01-01	19.9126
2007-01-01	19.3141
2008-01-01	19.6417
2009-01-01	21.7084
2010-01-01	21.0275
2011-01-01	19.5169
2012-01-01	20.7117
2013-01-01	19.1641
2014-01-01	20.5195
2015-01-01	20.6314
2016-01-01	21.1754
2017-01-01	23.0594