Year Percent of GDP 2000-01-01 2.1730 2001-01-01 2.1497 2002-01-01 9.6958 2003-01-01 11.1634 2004-01-01 12.3485 2005-01-01 10.4790 2006-01-01 8.5639 2007-01-01 8.0019 2008-01-01 5.2157 2009-01-01 5.1715 2010-01-01 4.6828 2011-01-01 3.3237 2012-01-01 1.9738 2013-01-01 1.6788 2014-01-01 1.2064 2015-01-01 1.9912 2016-01-01 2.0971 2017-01-01 2.0117 2018-01-01 2.1722 2019-01-01 2.3287