Year Percent of GDP (Units) 2001 0.000 2002 0.000 2003 0.000 2004 0.000 2005 0.000 2006 0.000 2007 0.000 2008 0.000 2009 0.000 2010 0.000 2011 0.000 2012 0.002 2013 0.456 2014 1.533 2015 2.909 2016 4.667 2017 6.645 2018 9.216 2019 9.398 2020 10.109 2021 6.485 2022 7.901 2023 11.755 2024 14.237 2025 14.546 2026 14.167 2027 13.554 2028 13.374 2029 13.546