Year	Percent of GDP
2004-01-01	31.3656
2005-01-01	33.8482
2006-01-01	36.1988
2007-01-01	38.8014
2008-01-01	42.1291
2009-01-01	44.5434
2010-01-01	45.0703
2011-01-01	46.6142
2012-01-01	49.4974
2013-01-01	50.6367
2014-01-01	51.5372
2015-01-01	52.9655
2016-01-01	55.1674
2017-01-01	59.2005