Year Percent of GDP (Units) 1997 3.858 1998 3.073 1999 1.940 2000 1.695 2001 1.305 2002 2.417 2003 2.598 2004 3.536 2005 5.781 2006 8.418 2007 9.933 2008 9.188 2009 4.780 2010 3.941 2011 1.817 2012 2.522 2013 1.540 2014 2.243 2015 2.637 2016 1.704 2017 1.538 2018 0.174 2019 0.718 2020 1.674 2021 1.987 2022 2.251 2023 1.496 2024 1.272 2025 1.392 2026 1.355 2027 1.285 2028 1.182 2029 1.082