Year Percent of GDP (Units) 1980 7.696 1981 11.052 1982 10.556 1983 7.300 1984 8.565 1985 15.326 1986 12.576 1987 11.780 1988 11.402 1989 12.927 1990 12.963 1991 13.024 1992 13.065 1993 13.531 1994 14.229 1995 14.768 1996 16.686 1997 18.189 1998 17.925 1999 17.297 2000 14.571 2001 13.546 2002 13.452 2003 15.459 2004 15.518 2005 17.564 2006 16.125 2007 18.251 2008 20.732 2009 19.990 2010 21.990 2011 22.124 2012 24.653 2013 23.710 2014 19.262 2015 19.430 2016 20.825 2017 24.037 2018 25.874 2019 25.566 2020 23.002 2021 24.858 2022 17.603 2023 19.722 2024 23.852 2025 25.357 2026 21.905 2027 21.685 2028 21.850 2029 22.034