Year Percent of GDP (Units) 1980 3.448 1981 8.622 1982 8.105 1983 7.246 1984 7.524 1985 6.477 1986 4.296 1987 6.944 1988 2.105 1989 1.285 1990 1.103 1991 2.181 1992 -2.912 1993 -3.662 1994 -2.052 1995 2.093 1996 1.976 1997 5.658 1998 7.236 1999 10.356 2000 10.930 2001 14.255 2002 12.626 2003 14.045 2004 13.161 2005 15.319 2006 14.584 2007 15.067 2008 14.915 2009 15.090 2010 16.565 2011 14.497 2012 15.865 2013 15.802 2014 18.900 2015 20.118 2016 21.174 2017 22.540 2018 23.840 2019 24.047 2020 24.291 2021 24.583 2022 26.852 2023 30.711 2024 30.577 2025 31.605 2026 30.112 2027 30.422 2028 30.664 2029 30.991