Year % of GNI 1970 2.9619349 1971 2.9 1972 2.7 1973 2.4 1974 2.3 1975 2.3 1976 2.3 1977 2.2 1978 2.1 1979 2.1 1980 2.3 1981 2.3 1982 2.4 1983 3 1984 3.2685536 1985 3.4416069 1986 3.4 1987 3.1 1988 3.1 1989 2.7094832 1990 2.6 1991 2.6 1992 3.1 1993 2.4 1994 2.3 1995 2.2 1996 2.2 1997 2.264151 1998 2.4828187 1999 2.34140934999996 2000 2.2 2001 2.6 2002 2.59857142857143 2003 2.59714285714286 2004 2.59571428571429 2005 2.59428571428571 2006 2.59285714285714 2007 2.59142857142857 2008 2.59 2009 2.88 2010 2.94 2011 2.82 2012 2.88 2013 2.76 2014 2.76 2015 2.76 2016 2.76 2017 2.76 2018 2.76 2019 2.76 2020 2.76 2021 2.76