Year Percent of GDP (Units) 1980 7.773 1981 5.816 1982 4.765 1983 3.635 1984 4.881 1985 6.361 1986 7.817 1987 7.894 1988 7.832 1989 7.805 1990 7.096 1991 7.639 1992 9.968 1993 13.171 1994 13.851 1995 13.930 1996 13.356 1997 12.899 1998 12.722 1999 11.980 2000 12.901 2001 14.775 2002 11.422 2003 12.996 2004 14.729 2005 13.818 2006 15.385 2007 17.988 2008 17.676 2009 17.482 2010 19.880 2011 19.526 2012 21.977 2013 21.564 2014 20.966 2015 18.623 2016 19.891 2017 17.582 2018 20.895 2019 22.491 2020 31.511 2021 27.212 2022 27.678 2023 20.364 2024 21.686 2025 21.563 2026 21.763 2027 21.229 2028 21.066 2029 21.415