Year % of GNI 1970 1.0865972781168984 1971 0.5321488952193317 1972 0.6999408180191858 1973 0.8199411362314932 1974 1.2220495440111538 1975 1.6659724013133248 1976 1.54087096322211 1977 1.735279346347874 1978 2.4256969466434124 1979 1.9490862035967418 1980 2.793140304649947 1981 2.2204668131638967 1982 2.6945765263847927 1983 3.238462468455972 1984 4.078505351689369 1985 4.916105466864695 1986 4.7712905695009145 1987 5.417768893682872 1988 5.162482114167035 1989 4.990232829533766 1990 5.237463300889465 1991 4.955276100867961 1992 3.420062587780404 1993 3.0497948456800987 1994 3.413715264185139 1995 2.020469821049478 1996 1.4541385495086714 1997 1.1495214662395605 1998 1.5641251436904566 1999 1.6999529087713672 2000 1.7241051257320434 2001 1.2822735087168138 2002 1.2244169039836625 2003 1.10684076763616 2004 1.1120295345935183 2005 0.9360034425000163 2006 0.7361295660653099 2007 1.1249072515589968 2008 1.6350044031324404 2009 2.091911045899136 2010 1.8203579199384918 2011 4.5784401573249935 2012 2.4467105095732986 2013 2.5736793855602427 2014 2.5465399105659876 2015 5.090276517820329 2016 2.122417670149649 2017 2.812428752287453 2018 2.3365956434124358 2019 3.1343108367821984 2020 4.120487081127937 2021 1.3099527172798435 2022 2.925419089222212