Year Percent of GDP (Units) 1980 5.207 1981 5.053 1982 3.852 1983 4.679 1984 6.442 1985 7.251 1986 6.732 1987 5.344 1988 7.223 1989 6.482 1990 6.030 1991 1.335 1992 3.876 1993 3.028 1994 0.609 1995 2.513 1996 5.346 1997 50.836 1998 50.411 1999 13.392 2000 8.087 2001 10.394 2002 11.543 2003 15.481 2004 12.988 2005 2.150 2006 6.718 2007 9.164 2008 4.581 2009 5.720 2010 15.388 2011 17.479 2012 8.579 2013 9.809 2014 15.528 2015 13.251 2016 8.239 2017 9.229 2018 8.985 2019 10.058 2020 9.496 2021 12.885 2022 6.838 2023 5.169 2024 6.750 2025 9.319 2026 9.522 2027 10.021 2028 9.568 2029 9.268