Year Percent of GDP (Units) 1999 94.676 2000 95.818 2001 99.766 2002 63.351 2003 63.157 2004 50.767 2005 60.084 2006 40.029 2007 31.181 2008 32.755 2009 39.329 2010 38.551 2011 34.155 2012 36.679 2013 49.482 2014 63.403 2015 86.034 2016 124.808 2017 103.792 2018 105.526 2019 98.262 2020 119.969 2021 104.338 2022 99.276 2023 91.865 2024 96.912 2025 94.666 2026 91.384 2027 76.813 2028 61.600 2029 42.449