Year Percent of GDP (Units) 1995 10.282 1996 10.168 1997 10.062 1998 9.510 1999 8.394 2000 7.494 2001 7.623 2002 7.448 2003 7.435 2004 7.830 2005 7.950 2006 8.205 2007 8.092 2008 14.627 2009 15.285 2010 19.090 2011 18.503 2012 20.849 2013 22.401 2014 21.850 2015 21.115 2016 19.588 2017 21.791 2018 20.904 2019 22.362 2020 24.604 2021 24.504 2022 24.733 2023 25.665 2024 27.969 2025 28.702 2026 29.459 2027 30.106 2028 30.730 2029 31.302