Year % of GDP 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 2009 0.00183769562201587 2010 0.00724499256922988 2011 0.00507727643001671 2012 0 2013 0 2014 0 2015 0 2016 9.90538673681238E-05 2017 0.000130013475187816 2018 0.000148574727905969 2019 0.000104208156503271 2020 8.32489506864312E-05 2021 0.000163832810177573