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 0.000112305781976638 2006 0.00980260164171109 2007 0.0132250729170734 2008 0.0298507363601294 2009 0.0046028735659451 2010 0.0338886834591529 2011 0.0714397773870135 2012 0.0566415168053355 2013 0.0588929000862641 2014 0.0587105859995099 2015 0.0246227517816 2016 0.0185088381110048 2017 0.0283872427651081 2018 0.0422964969836641 2019 0.0375136266059601 2020 0.023939484713493 2021 0.0518131827535177