Year	Percent of GDP
2004-01-01	13.4539
2005-01-01	14.6379
2006-01-01	15.9217
2007-01-01	16.2271
2008-01-01	16.6776
2009-01-01	16.1084
2010-01-01	17.8265
2011-01-01	18.7392
2012-01-01	19.7988
2013-01-01	30.7265
2014-01-01	31.7160
2015-01-01	29.6745
2016-01-01	35.1689