Year Percent of GDP (Units) 2000 123.303 2001 108.207 2002 107.941 2003 108.230 2004 92.666 2005 85.661 2006 73.355 2007 57.744 2008 49.012 2009 58.494 2010 59.699 2011 50.056 2012 50.478 2013 47.125 2014 53.597 2015 67.087 2016 59.073 2017 58.786 2018 54.818 2019 48.848 2020 63.643 2021 56.201 2022 49.219 2023 49.490 2024 47.216 2025 45.609 2026 44.723 2027 44.485 2028 44.975 2029 45.460