Year	Percent of GDP
2004-01-01	21.1445
2005-01-01	24.7923
2006-01-01	25.5411
2007-01-01	24.4739
2008-01-01	25.6276
2009-01-01	26.5794
2010-01-01	27.2651
2011-01-01	30.2861
2012-01-01	30.7561
2013-01-01	34.3804
2014-01-01	36.3633
2015-01-01	37.5907
2016-01-01	38.7993