Year % of GNI 1970 20.33751462456845 1971 19.813926011419547 1972 18.815000370825288 1973 19.59590079791272 1974 19.903605216482354 1975 21.350906143700865 1976 27.866587153065677 1977 39.38517140095368 1978 36.00818131078762 1979 32.94107331038108 1980 28.913543204451937 1981 30.90893486571913 1982 50.06020402019578 1983 63.354337357360535 1984 54.55828773179119 1985 52.116283396150735 1986 79.57034177255856 1987 77.91076975473449 1988 57.00650855952879 1989 44.11819707725946 1990 41.40655465790638 1991 37.50669559107253 1992 31.80617380711136 1993 25.425996872192215 1994 25.86256610199768 1995 45.453036726250666 1996 37.681559606151694 1997 29.14743288225307 1998 31.45678357577412 1999 30.06078310074045 2000 24.501464577211063 2001 25.901621070875258 2002 24.158632481168116 2003 26.321808348522413 2004 25.86299493558905 2005 24.135194770419172 2006 22.07310845576138 2007 23.106302428144364 2008 21.662586617915856 2009 26.50797169621794 2010 28.066652044326517 2011 29.050724635069454 2012 35.12894944642717 2013 38.904223836697454 2014 40.25245071132432 2015 44.8463138051859 2016 50.29658422199319 2017 49.858910631533725 2018 49.50493474482787 2019 48.03597481566088 2020 55.55293526093813 2021 46.47281010743967 2022 41.92464709807361