Year Percent of GDP 2004-01-01 40.8039474431697 2005-01-01 33.1423182238025 2006-01-01 36.4736710354616 2007-01-01 38.9652660124184 2008-01-01 41.1626807321010 2009-01-01 37.9878834539509 2010-01-01 40.8440532029970 2011-01-01 42.1865964180804 2012-01-01 37.5440946577353 2013-01-01 33.1616842943618 2014-01-01 31.7775399732384 2015-01-01 27.1772385083656 2016-01-01 21.1637150511091 2017-01-01 21.8025250880558 2018-01-01 22.3252994536874 2019-01-01 22.6990711834077