Year Percent of GDP (Units) 1995 22.762 1996 21.113 1997 24.622 1998 24.380 1999 21.396 2000 18.833 2001 19.089 2002 20.809 2003 21.969 2004 22.888 2005 24.266 2006 26.947 2007 32.309 2008 28.124 2009 12.657 2010 18.126 2011 21.962 2012 19.760 2013 19.526 2014 19.623 2015 21.270 2016 19.208 2017 19.181 2018 20.356 2019 17.784 2020 14.580 2021 20.370 2022 26.873 2023 19.564 2024 21.511 2025 21.528 2026 21.634 2027 22.000 2028 22.558 2029 23.000