Year	Percent of GDP
2004-01-01	20.7510
2005-01-01	21.9428
2006-01-01	22.5369
2007-01-01	28.0102
2008-01-01	29.2555
2009-01-01	31.0315
2010-01-01	34.7531
2011-01-01	34.6862
2012-01-01	33.5326
2013-01-01	35.0319
2014-01-01	37.8534
2015-01-01	41.4501
2016-01-01	40.9579