Year % of GNI 1970 4.1449533991920395 1971 4.149579891713315 1972 4.155889170169497 1973 4.984266420609506 1974 3.2211062479496766 1975 2.728019553616654 1976 2.987001987968979 1977 2.996213245669928 1978 5.389855290279137 1979 5.109598730596044 1980 5.9943480141587075 1981 7.431415939868984 1982 8.535190498620764 1983 8.205562263953222 1984 7.891551683250599 1985 7.532271082350469 1986 9.065099411617943 1987 9.231992283889728 1988 8.118602057101505 1989 6.898944965875346 1990 7.21370445933255 1991 6.588774314365081 1992 7.055634619020382 1993 7.814032926426627 1994 6.197896068975914 1995 6.166747522914943 1996 5.484379208472236 1997 4.61026470782664 1998 5.600464026608714 1999 6.078090308015387 2000 7.717647343205282 2001 10.83088206191473 2002 11.050192387118527 2003 10.711452870239444 2004 11.05461349145633 2005 8.080864196362521 2006 9.482184164899323 2007 4.881534548627464 2008 5.233033403167507 2009 4.579544126434416 2010 4.945364524948587 2011 3.6652018936531388 2012 1.9627890344590684 2013 1.8532398080021717 2014 2.271947859772701 2015 3.0976297717132417 2016 3.1055758461530343 2017 3.0730871703742317 2018 2.2956739530944024 2019 2.561761302595778 2020 2.3872943495095633 2021 2.9781616985668595 2022 2.1059149998165987