Year % of GNI 1970 6.93598654862257 1971 6.79211920096001 1972 7.14814264155076 1973 6.68752115267927 1974 5.46991064664438 1975 5.12894070086909 1976 5.27663195897705 1977 5.65110023499439 1978 5.90548575880895 1979 6.29000961997723 1980 6.49871666998855 1981 6.71540640642099 1982 7.55765954246706 1983 8.24253321268755 1984 7.93820405059908 1985 7.43907206344416 1986 8.06929538315753 1987 8.55304813015926 1988 9.35108277015953 1989 9.6316177530237 1990 9.10238859790126 1991 8.96137595884233 1992 8.77731376432909 1993 10.3070441726711 1994 10.466549680979 1995 10.8499682982205 1996 11.2926936900315 1997 10.7098647282832 1998 10.9184145605395 1999 12.7718481140429 2000 12.2722824595627 2001 11.8918460990341 2002 11.6163092984051 2003 12.3081025238467 2004 12.2211846007193 2005 11.7971222555986 2006 12.1277606845716 2007 12.6216426744371 2008 11.9942449186705 2009 12.6723949164545 2010 13.5368396524193 2011 12.3285845107825 2012 12.5125699547315 2013 12.348812418561 2014 13.1673873438301 2015 15.2842107501695 2016 16.4822757108363 2017 16.5683798294448 2018 17.6837565698303 2019 18.4965779268709 2020 19.0999879143982 2021 19.4491709754071