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 2006 0 2007 0 2008 0.0219835646063037 2009 0.00718429697951017 2010 0 2011 0 2012 0.0176585171987541 2013 0.00460692110876805 2014 0.0623369671683315 2015 0.0226080767805337 2016 0.0227863385971937 2017 0.0475010544657409 2018 0.0378599470385953 2019 0.050882518898508 2020 0.0291292966776496 2021 0.0477688089316108