Year % of GNI 1970 2.0989835 1971 2.04658893216807 1972 1.94574247848234 1973 1.96120540726922 1974 2.13256200122576 1975 2.1796501362846 1976 2.24205123015873 1977 2.09237482017737 1978 2.09993575141203 1979 2.06157 1980 1.92778788927905 1981 2.01894173332881 1982 1.55144065755118 1983 2.33932537419012 1984 2.37732923475724 1985 2.30696553356132 1986 2.3242074 1987 2.3242074 1988 2.3242074 1989 2.2351594 1990 2.23428419081411 1991 2.75359 1992 2.45178085773992 1993 2.6513137 1994 2.6513137 1995 2.7715877 1996 2.62714826888101 1997 2.7715877 1998 3.0754899 1999 3.14728277374103 2000 3.21907564748207 2001 3.29086852122312 2002 3.53639368763782 2003 3.5904661054534 2004 3.67808811151462 2005 3.40779346747794 2006 3.08041487247892 2007 2.87886285540958 2008 2.67586261019569 2009 2.83636488698864 2010 3.00160005831591 2011 2.79936483172987 2012 2.82959281207101 2013 2.82959281207101 2014 2.82959281207101 2015 2.82959281207101 2016 2.82959281207101 2017 2.82959281207101 2018 2.82959281207101 2019 2.82959281207101 2020 2.82959281207101 2021 2.82959281207101