Year Percent of GDP (Units) 1992 13.323 1993 13.559 1994 18.805 1995 23.265 1996 19.598 1997 11.908 1998 16.131 1999 12.880 2000 18.814 2001 18.101 2002 19.196 2003 21.660 2004 25.258 2005 28.727 2006 50.962 2007 49.184 2008 52.904 2009 34.091 2010 31.258 2011 33.722 2012 32.707 2013 29.472 2014 30.275 2015 25.744 2016 24.343 2017 31.907 2018 35.365 2019 34.636 2020 33.420 2021 33.088 2022 38.523 2023 37.857 2024 37.541 2025 37.890 2026 37.779 2027 37.851 2028 37.936 2029 38.404