Year	Percent of GDP
2004-01-01	16.5350
2005-01-01	28.2088
2006-01-01	22.4281
2007-01-01	19.5286
2008-01-01	17.1549
2009-01-01	21.6504
2010-01-01	23.2912
2011-01-01	20.4599
2012-01-01	19.3749
2013-01-01	21.0765
2014-01-01	21.9630
2015-01-01	22.6447
2016-01-01	23.9955