Year Percent of GDP (Units) 1980 8.113 1981 11.136 1982 7.490 1983 11.739 1984 12.612 1985 12.145 1986 12.614 1987 13.449 1988 16.827 1989 16.997 1990 14.512 1991 16.711 1992 17.955 1993 15.684 1994 19.072 1995 18.951 1996 18.888 1997 21.287 1998 26.508 1999 25.174 2000 23.669 2001 23.877 2002 24.029 2003 24.225 2004 25.255 2005 23.458 2006 23.539 2007 23.436 2008 20.648 2009 18.807 2010 18.918 2011 17.523 2012 17.759 2013 18.632 2014 19.887 2015 21.645 2016 21.897 2017 22.306 2018 24.252 2019 24.671 2020 23.689 2021 28.509 2022 27.720 2023 25.597 2024 25.913 2025 26.069 2026 25.836 2027 25.692 2028 25.730 2029 25.714