Year	Percent of GDP
2004-01-01	15.9554983667904
2005-01-01	17.5082511770144
2006-01-01	18.7533330353751
2007-01-01	16.0110567278781
2008-01-01	19.2055813633677
2009-01-01	18.3894123495248
2010-01-01	19.2178073662756
2011-01-01	20.0727217378256
2012-01-01	21.8333918245655
2013-01-01	26.1530197694343
2014-01-01	29.5710739079702
2015-01-01	32.4246435911684
2016-01-01	31.6459847456046
2017-01-01	31.9911596264377