Year	Percent of GDP
2004-01-01	18.9005
2005-01-01	21.4063
2006-01-01	24.5355
2007-01-01	26.9662
2008-01-01	31.9011
2009-01-01	34.2658
2010-01-01	31.7136
2011-01-01	30.6463
2012-01-01	32.6757
2013-01-01	28.9116
2014-01-01	33.7886
2015-01-01	38.4747
2016-01-01	45.5136
2017-01-01	57.7913