Year % of GNI 1970 1.6431382566920718 1971 1.773621365390519 1972 1.8074310699599452 1973 2.412639022348604 1974 1.7010332573535616 1975 1.950863112320672 1976 2.2616794407506577 1977 2.5005203914304004 1978 2.9014285565934808 1979 3.2031439918197426 1980 4.567905412824643 1981 4.907004810001403 1982 4.897937308711522 1983 4.348352414108238 1984 4.329354477981434 1985 4.285073027939723 1986 5.6089255401117875 1987 5.330039079123494 1988 5.239137740432769 1989 4.335912392574916 1990 4.317336436524312 1991 3.969982466886277 1992 3.85097795081187 1993 3.7042437489330613 1994 5.142220642946865 1995 6.178378812948587 1996 4.741303485283579 1997 4.110809550649131 1998 4.025770656973726 1999 3.8272803589290767 2000 3.379049589972876 2001 2.9357332519992587 2002 3.024850841447014 2003 2.6610009942636768 2004 2.4142820479107363 2005 2.1039683853447233 2006 1.690233934062737 2007 1.8670448626376765 2008 1.766277173083558 2009 1.5463836162734874 2010 1.2735115730368947 2011 1.4165131901617694 2012 1.737466350954915 2013 1.819614702680023 2014 2.306142508074264 2015 2.301469147728088 2016 2.956110233628178 2017 3.319654827324039 2018 3.2250836269537912 2019 4.339040547072685 2020 3.236722205398617 2021 4.069774797869183 2022 3.6296809357624764