Year % of GNI 1970 18.298217533739273 1971 19.61288067002416 1972 22.210853905550582 1973 19.83387095439758 1974 25.709532272303694 1975 26.649586698688214 1976 24.54187013878402 1977 27.924754975196812 1978 32.46112236968736 1979 28.446763997042652 1980 28.560998385775964 1981 36.549366034438094 1982 46.816464231707315 1983 54.50972606812016 1984 54.64649783383146 1985 52.86775285968036 1986 53.49687357086662 1987 54.07286783916423 1988 51.5760872996547 1989 51.08688011943614 1990 47.59472737766395 1991 44.476273390313445 1992 41.12961377745776 1993 30.344417876702533 1994 28.51922414761135 1995 29.112016709024008 1996 30.34893139301688 1997 31.84703901837964 1998 30.729217080631994 1999 34.20253307619448 2000 39.32650524252977 2001 44.47555533847119 2002 49.54319296957829 2003 67.20726092261289 2004 68.95166372578969 2005 67.72084678237856 2006 64.28689714741392 2007 59.586836792002664 2008 60.737206586149206 2009 61.04653793196505 2010 64.18702757610258 2011 64.72826776432277 2012 66.03858856118688 2013 67.29250428698771 2014 70.3634597845907 2015 69.67737210887307 2016 72.20196950366201 2017 72.81992155757332 2018 68.12308247850576 2019 68.12132984756484 2020 78.06134540609659 2021 72.89041281902966 2022 69.55534966997324