Year Percent of GDP (Units) 2003 58.101 2004 43.941 2005 38.443 2006 34.142 2007 11.430 2008 10.013 2009 14.212 2010 7.943 2011 -0.194 2012 -2.834 2013 -5.541 2014 -8.773 2015 -7.082 2016 -5.710 2017 -3.022 2018 -3.655 2019 -2.574 2020 2.726 2021 5.643 2022 9.748 2023 10.493 2024 12.327 2025 13.727 2026 15.129 2027 16.521 2028 17.906 2029 19.409