Year % of GNI 1970 2.250640738230652 1971 1.015309685493673 1972 1.0982334761003913 1973 0.9965460512111338 1974 0.9430187305511841 1975 1.0849663707649906 1976 1.4548685145571825 1977 1.3174878292887455 1978 1.236985691960987 1979 1.1906422665383085 1980 1.1494818166228407 1981 1.1640602882385582 1982 1.3037875210659673 1983 1.5956353602259203 1984 1.7507306701314762 1985 1.878933727333036 1986 2.3997289420841725 1987 2.3510964336221054 1988 2.2968159446870993 1989 2.52544452193636 1990 2.6925780229458898 1991 2.9567161585750883 1992 2.818132441557798 1993 3.0247365033038265 1994 3.5137402432821396 1995 3.7394196128496784 1996 3.1375749708758196 1997 3.2453733612360884 1998 2.800010438585307 1999 2.4481763760553585 2000 2.385541017391261 2001 2.490577470951609 2002 2.890156994424282 2003 3.7694468165157953 2004 2.5108780488562332 2005 2.6134616117955596 2006 1.7795573793887636 2007 2.886696662764837 2008 2.352090153698836 2009 1.3455867131718724 2010 1.5286738359388619 2011 1.5550699853236376 2012 1.7155451897545277 2013 2.116825034172701 2014 4.108800378801168 2015 2.1970181355392575 2016 2.9120405523318165 2017 1.9097741684345435 2018 2.3083789603935827 2019 2.072837160693037 2020 2.7945317157755145 2021 1.805646340565971 2022 2.1395885277020743