Year % of GDP 1971 0 1972 0 1973 0 1974 0 1975 0 1976 0 1977 0 1978 0 1979 0 1980 0 1981 0 1982 0 1983 0 1984 0 1985 0 1986 0 1987 0 1988 0 1989 0 1990 0 1991 0 1992 0 1993 0 1994 0 1995 0 1996 0 1997 0 1998 0 1999 0 2000 0 2001 0 2002 0 2003 0 2004 0 2005 0.00691360941835017 2006 0.0124673577202567 2007 0.0199079952644518 2008 0.0636567644064419 2009 0.0333654229570058 2010 0.0375672237551005 2011 0.0395969861926023 2012 0.0341521338114773 2013 0.0260913874063632 2014 0.0214685808700036 2015 0.0105820886256824 2016 0.0132346228332281 2017 0.0181189029918176 2018 0.0155150936968582 2019 0.00907068775272057 2020 0.00725364048807305 2021 0.0132526717304666