Year	Percent of GDP
2004-01-01	28.0877
2005-01-01	31.3170
2006-01-01	32.9897
2007-01-01	38.1098
2008-01-01	43.7707
2009-01-01	41.7174
2010-01-01	39.1295
2011-01-01	41.0420
2012-01-01	42.6431
2013-01-01	44.9172
2014-01-01	47.6660
2015-01-01	49.3485
2016-01-01	51.7389
2017-01-01	55.2292