Year Percent of GDP (Units) 1980 35.194 1981 43.752 1982 46.777 1983 44.276 1984 40.247 1985 42.866 1986 38.272 1987 37.440 1988 35.760 1989 34.412 1990 36.961 1991 35.100 1992 33.613 1993 36.346 1994 39.901 1995 35.469 1996 34.374 1997 35.383 1998 28.715 1999 31.441 2000 27.862 2001 28.986 2002 32.741 2003 30.592 2004 38.719 2005 38.413 2006 37.576 2007 61.180 2008 58.950 2009 44.743 2010 43.448 2011 43.310 2012 33.864 2013 28.848 2014 33.705 2015 35.173 2016 33.034 2017 34.338 2018 33.781 2019 33.479 2020 24.108 2021 40.550 2022 38.405 2023 26.204 2024 23.047 2025 22.526 2026 17.908 2027 14.115 2028 15.689 2029 16.449