Year % of GNI 1970 1.9231623 1971 1.9231623 1972 1.9231623 1973 1.9231623 1974 1.9231623 1975 2.6 1976 3.50000000000001 1977 4.40000000000005 1978 5.3 1979 4.89999999999995 1980 4.5 1981 4.47000000000001 1982 4.44000000000001 1983 4.41 1984 4.38000000000001 1985 4.35000000000001 1986 4.32 1987 4.29 1988 4.26000000000001 1989 4.23000000000001 1990 4.2 1991 4.17000000000001 1992 4.14000000000001 1993 4.11 1994 4.08000000000001 1995 4.05000000000001 1996 4.02 1997 3.99 1998 3.96000000000001 1999 3.93000000000001 2000 3.9 2001 3.87000000000001 2002 3.84000000000001 2003 3.81 2004 3.78000000000001 2005 3.75000000000001 2006 3.72 2007 3.69 2008 3.66 2009 3.66 2010 3.66 2011 3.66 2012 3.66 2013 3.66 2014 3.66 2015 3.66 2016 3.66 2017 3.66 2018 3.66 2019 3.66 2020 3.66 2021 3.66