Year Percent of GDP (Units) 1980 8.961 1981 23.142 1982 17.275 1983 11.690 1984 11.480 1985 8.580 1986 6.189 1987 15.934 1988 24.882 1989 20.010 1990 31.540 1991 17.228 1992 16.942 1993 12.937 1994 8.271 1995 23.924 1996 11.599 1997 16.201 1998 13.758 1999 30.707 2000 29.380 2001 22.007 2002 25.987 2003 21.023 2004 22.559 2005 16.793 2006 15.991 2007 15.079 2008 13.151 2009 9.758 2010 8.479 2011 6.637 2012 9.903 2013 16.418 2014 17.838 2015 5.428 2016 14.414 2017 12.712 2018 14.151 2019 21.855 2020 17.428 2021 17.726 2022 3.902 2023 7.701 2024 4.240 2025 4.846 2026 4.950 2027 8.722 2028 10.915 2029 15.138