Year Percent of GDP (Units) 1997 14.648 1998 14.217 1999 11.344 2000 14.096 2001 12.337 2002 10.556 2003 11.319 2004 11.046 2005 11.504 2006 8.744 2007 7.862 2008 6.355 2009 7.841 2010 8.858 2011 9.622 2012 10.260 2013 13.005 2014 13.173 2015 13.790 2016 11.913 2017 14.680 2018 11.357 2019 11.567 2020 11.754 2021 10.861 2022 9.442 2023 10.459 2024 10.726 2025 10.816 2026 10.896 2027 10.968 2028 11.029 2029 11.081