Year % of GNI 1970 3.7229541 1971 3.7229541 1972 3.7229541 1973 3.7229541 1974 3.7229541 1975 3.7229541 1976 3.7229541 1977 3.7229541 1978 3.7229541 1979 3.7229541 1980 3.7229541 1981 3.7229541 1982 3.7229541 1983 3.7229541 1984 2.8 1985 2.6 1986 3.1206844 1987 2.5 1988 3.3413309 1989 3.3413309 1990 3.3413309 1991 3 1992 3.8966724 1993 3.8966724 1994 3.8966724 1995 3.8966724 1996 3.8966724 1997 3.8966724 1998 3.9 1999 4.62 2000 4.73666666666666 2001 4.85333333333333 2002 4.97 2003 5.47257 2004 6.24 2005 5.64499999999999 2006 5.05 2007 4.69 2008 5.07 2009 4.72 2010 4.91 2011 5.01 2012 5.07497471248328 2013 5.13994942496658 2014 5.20492413744988 2015 5.26989884993317 2016 5.21371659070838 2017 5.21371659070838 2018 5.21371659070838 2019 5.21371659070838 2020 5.21371659070838 2021 5.21371659070838