Year Percent of GDP (Units) 1993 14.543 1994 12.682 1995 12.142 1996 11.198 1997 12.288 1998 15.152 1999 16.210 2000 17.712 2001 21.037 2002 16.714 2003 17.154 2004 14.557 2005 13.162 2006 14.245 2007 15.675 2008 14.188 2009 10.303 2010 13.829 2011 14.168 2012 14.382 2013 14.707 2014 13.860 2015 19.252 2016 24.866 2017 27.626 2018 33.855 2019 39.513 2020 40.991 2021 40.183 2022 40.952 2023 37.814 2024 37.200 2025 37.966 2026 38.820 2027 39.505 2028 39.851 2029 40.951