Year Percent of GDP 2000-01-01 26.6622 2001-01-01 27.4205 2002-01-01 21.0656 2003-01-01 19.3838 2004-01-01 16.6471 2005-01-01 9.5817 2006-01-01 8.6526 2007-01-01 6.8820 2008-01-01 4.7106 2009-01-01 6.6514 2010-01-01 5.6718 2011-01-01 5.1632 2012-01-01 4.8517 2013-01-01 5.0195 2014-01-01 4.9252 2015-01-01 15.4738 2016-01-01 33.3231 2017-01-01 44.2204 2018-01-01 46.7702 2019-01-01 48.3398