Year	Percent of GDP
2004-01-01	2.9351
2005-01-01	3.7050
2006-01-01	4.5076
2007-01-01	7.1774
2008-01-01	9.4476
2009-01-01	9.9561
2010-01-01	10.8185
2011-01-01	12.8238
2012-01-01	13.3319
2013-01-01	14.8907
2014-01-01	17.0693
2015-01-01	15.7685
2016-01-01	15.6562