Year % of GNI 1970 0.038906675738671 1971 0.036171246201124 1972 0.0381781730000218 1973 0.0584924292915395 1974 0.0484573973842774 1975 0.0488846153786114 1976 0.037102583644079 1977 0.0530292511374528 1978 0.0513875298089315 1979 0.0494453773631321 1980 0.0508697964159419 1981 0.045898350922049 1982 0.0887027912604467 1983 0.029303873654977 1984 0.0149464691268817 1985 0.0210984062462521 1986 0.0169610568650818 1987 0.018049222648115 1988 0.0191328687946016 1989 0.0151813768305585 1990 0.0438548785517046 1991 0.0363309413760355 1992 0.028514418722896 1993 0.0198703553614441 1994 0.020450267576068 1995 0.0230299686592724 1996 0.0150852381080328 1997 0.0180513216315651 1998 0.0141473323683731 1999 0.0115794096308976 2000 0.0101082808997601 2001 0.00953634021534374 2002 0.00808182186131671 2003 0.0111415446589221 2004 0.0111629522648035 2005 0.00686385513890032 2006 0.0223851167336568 2007 0.0205406966377679 2008 0.0193254494077591 2009 0.0177564440775678 2010 0.0359678866431284 2011 0.030389496702553 2012 0.0300337769430199 2013 0.042050221074567 2014 0.0507971052432375 2015 0.039172052838945 2016 0.0502859295983386 2017 0.042596953234442 2018 0.0303981826019328 2019 0.028251383003086 2020 0.0365317496883882 2021 0.0273087699091802