Year	Percent of GDP
2004-01-01	31.5429
2005-01-01	33.2154
2006-01-01	35.8388
2007-01-01	34.8601
2008-01-01	35.1812
2009-01-01	35.5562
2010-01-01	34.0990
2011-01-01	34.2060
2012-01-01	33.9226
2013-01-01	33.6586
2014-01-01	34.9670
2015-01-01	36.0411
2016-01-01	37.7069