Year Percent of GDP (Units) 1980 17.947 1981 15.407 1982 17.254 1983 14.726 1984 14.050 1985 17.977 1986 14.629 1987 10.954 1988 14.389 1989 13.369 1990 12.742 1991 14.496 1992 17.703 1993 16.109 1994 15.731 1995 13.467 1996 16.537 1997 16.242 1998 14.012 1999 20.860 2000 28.582 2001 21.262 2002 15.150 2003 14.524 2004 14.888 2005 18.641 2006 21.926 2007 22.102 2008 24.460 2009 21.694 2010 21.168 2011 23.026 2012 22.846 2013 23.917 2014 24.055 2015 20.402 2016 21.365 2017 22.304 2018 21.320 2019 20.848 2020 19.888 2021 23.856 2022 24.107 2023 21.635 2024 22.101 2025 24.527 2026 25.627 2027 26.587 2028 27.061 2029 27.197