Year	Percent of GDP
2004-01-01	18.2072
2005-01-01	18.8633
2006-01-01	19.5642
2007-01-01	22.0298
2008-01-01	24.6797
2009-01-01	24.0667
2010-01-01	21.8038
2011-01-01	21.4494
2012-01-01	23.4051
2013-01-01	25.3034
2014-01-01	24.7025
2015-01-01	24.8184
2016-01-01	28.2314