Year % of GNI 1970 10.33034661095414 1971 11.200586269751268 1972 11.59562553014423 1973 11.238278591869644 1974 11.30356303746952 1975 12.108525523907222 1976 14.004960617636119 1977 16.527235626180634 1978 17.358986582542197 1979 16.906345022962164 1980 17.154925778119846 1981 18.946771801826966 1982 22.37960141429445 1983 23.524117349707804 1984 23.788800590149304 1985 26.076945750066045 1986 28.060129105673294 1987 30.766256860558165 1988 28.583697704492234 1989 29.944005070111423 1990 30.420042850882272 1991 31.50368207510614 1992 33.32784419223555 1993 33.00425769630754 1994 35.41893978870618 1995 35.16362241652868 1996 33.26386932173014 1997 32.437234361426796 1998 36.66619489520359 1999 38.802102343906 2000 34.37163239398431 2001 34.35355697296671 2002 34.394710144963355 2003 33.42707752767714 2004 30.189756745401215 2005 25.685927368197774 2006 23.745519521409175 2007 22.807989686164674 2008 20.393178847357426 2009 22.31706383555544 2010 21.965896280808895 2011 21.69577170153246 2012 22.593322986157496 2013 24.294412648667553 2014 24.998092386314223 2015 24.569608193695718 2016 25.41679078521944 2017 25.674723181144355 2018 25.665214547295783 2019 26.221775434112725 2020 28.445998971771257 2021 25.874249724384242 2022 23.612633747243123