Year Percent of GDP (Units) 2000 145.158 2001 161.137 2002 157.755 2003 168.521 2004 164.082 2005 170.715 2006 178.354 2007 163.519 2008 149.678 2009 131.153 2010 127.568 2011 128.754 2012 123.719 2013 126.091 2014 130.018 2015 134.406 2016 140.694 2017 144.400 2018 150.771 2019 167.061 2020 147.943 2021 346.403 2022 280.542