Year Percent of GDP 2000 145.255 2001 161.243 2002 157.859 2003 168.633 2004 164.191 2005 170.772 2006 178.142 2007 163.215 2008 149.123 2009 130.866 2010 127.649 2011 128.276 2012 123.12 2013 126.128 2014 129.478 2015 134.286 2016 140.443 2017 143.41 2018 146.73 2019 153.753 2020 158.845 2021 162.871 2022 165.753 2023 167.872 2024 169.893