Year Percent of GDP (Units) 2000 468.080 2001 465.171 2002 463.616 2003 600.117 2004 543.399 2005 488.458 2006 450.955 2007 366.805 2008 235.281 2009 132.157 2010 25.397 2011 22.519 2012 20.504 2013 20.612 2014 24.332 2015 24.771 2016 28.571 2017 31.800 2018 37.103 2019 48.531 2020 58.676 2021 53.308 2022 53.904 2023 55.744 2024 56.510 2025 57.671 2026 57.933 2027 58.397 2028 58.024 2029 57.487