Year	Percent of GDP
2004-01-01	19.3231
2005-01-01	21.7625
2006-01-01	25.0683
2007-01-01	28.5056
2008-01-01	27.7646
2009-01-01	25.1516
2010-01-01	24.0526
2011-01-01	23.9205
2012-01-01	26.6144
2013-01-01	29.2239
2014-01-01	31.1710
2015-01-01	34.1689
2016-01-01	36.5857
2017-01-01	41.2583