Year Percent of GDP (Units) 2000 92.438 2001 78.469 2002 42.908 2003 37.393 2004 36.924 2005 42.065 2006 13.121 2007 13.184 2008 15.082 2009 12.464 2010 17.286 2011 17.502 2012 21.329 2013 20.218 2014 19.658 2015 23.149 2016 29.984 2017 31.098 2018 34.089 2019 36.188 2020 40.004 2021 43.394 2022 48.822 2023 50.068 2024 51.795 2025 52.362 2026 52.273 2027 52.358 2028 52.489 2029 52.670