Year % of GNI 1980 3.616655762614978 1981 3.0423520036415397 1982 4.229983913562048 1983 2.397709260562947 1984 1.6127264508185255 1985 1.5037884678682198 1986 1.1275543309348444 1987 1.1355772362637335 1988 1.0326271203996136 1989 1.2089400245027888 1990 1.4571052481258187 1991 1.3952953739512346 1992 1.423054872124185 1993 1.4812295151505945 1994 1.9994087194533683 1995 2.282136915853173 1996 2.0627110983972323 1997 1.6555020871393156 1998 0.9923650659619977 1999 1.007750232839672 2000 1.0289405610208135 2001 0.871892369859317 2002 0.8761123405019693 2003 1.0037497329341536 2004 1.1917066455946086 2005 1.5830785979993436 2006 1.9966283179964943 2007 2.243315863341044 2008 2.8312867751787314 2009 2.493183518605874 2010 4.607185899798871 2011 6.413181216317164 2012 6.216084037992486 2013 4.8938688312210195 2014 3.408634950979885 2015 1.8378904708510697 2016 3.5356963070801344 2017 3.7141664691878162 2018 2.0071634115593735 2019 1.6756254117710108 2020 2.89983721064887 2021 8.023960106596922