Year Percent of GDP (Units) 2001 180.656 2002 158.815 2003 160.348 2004 151.598 2005 130.898 2006 103.229 2007 42.166 2008 72.004 2009 48.050 2010 46.849 2011 42.033 2012 36.371 2013 30.545 2014 35.089 2015 47.645 2016 60.725 2017 69.155 2018 69.089 2019 72.450 2020 76.331 2021 79.357 2022 94.086 2023 80.016 2024 69.659 2025 67.808 2026 66.157 2027 63.694 2028 63.611 2029 63.389