Year % of GNI 1970 0.0439180931348885 1971 0.0443477946615681 1972 0.0430728039882633 1973 0.0510491546833382 1974 0.0448234239380414 1975 0.0437812257534349 1976 0.0440047760852481 1977 0.0337734263416781 1978 0.0332119658167276 1979 0.0342825224640676 1980 0.0358353193917336 1981 0.0349666082133677 1982 0.0412328937426001 1983 0.0396356018156857 1984 0.0357977706602741 1985 0.0400436049152625 1986 0.0352930916657089 1987 0.0328965610082451 1988 0.0339549812641648 1989 0.0445244832924463 1990 0.0429939763433374 1991 0.0278954517457004 1992 0.0230971864904807 1993 0.0249259169986398 1994 0.0227442641263246 1995 0.0206806011075913 1996 0.0220842317002667 1997 0.0198970167186257 1998 0.0228517229511064 1999 0.022303408862574 2000 0.0239743188830179 2001 0.0206114869670566 2002 0.0232380454760227 2003 0.0212863443147595 2004 0.0156463974107887 2005 0.0154776471288981 2006 0.017495437245181 2007 0.0188114238452013 2008 0.0179266058840974 2009 0.0170006778971711 2010 0.018994257931132 2011 0.0175187867748547 2012 0.0149345223109174 2013 0.0141359055223198 2014 0.0128936547821888 2015 0.0110375471450875 2016 0.0106821305442346 2017 0.00945013640173785 2018 0.0106170479606182 2019 0.00831720276999125 2020 0.00755260063873501 2021 0.00743966104464943