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 0.000104554774481391 2006 0.000220340993296497 2007 0 2008 0 2009 0 2010 0.0084342457466574 2011 0.00518125344429736 2012 0.00580802788099242 2013 0.00425988559637562 2014 0.00393161333522517 2015 0.00127546010473342 2016 0.00103242097431613 2017 0.00137273248762722 2018 0.00222636273443113 2019 0.00192075459732704 2020 0.00096047242789138 2021 0.00194465680647297