Year % of GNI 1970 14.100203256180247 1971 14.64180101060226 1972 15.086606919767394 1973 11.53986802986858 1974 11.686982159967265 1975 12.533402481891113 1976 13.727767916870839 1977 16.9592888874452 1978 21.104636271547516 1979 24.552880295589574 1980 25.855579402197726 1981 31.642487206063404 1982 33.96781946071778 1983 34.97335137524428 1984 36.3390289403899 1985 45.867414942231505 1986 43.88165776928493 1987 41.04569130192747 1988 35.86128337118794 1989 32.99703544919013 1990 33.49115450914732 1991 39.05265443646809 1992 38.28657685406709 1993 41.600255316538 1994 45.53124227565764 1995 60.29438110611049 1996 63.264120756970634 1997 75.30991573744396 1998 96.0465858961431 1999 78.92054802996718 2000 64.43097834606843 2001 57.551858666447885 2002 48.55869312055882 2003 40.02078993877747 2004 35.32191997139058 2005 32.3646539880224 2006 29.373471913580435 2007 24.865159518888177 2008 23.7603550819429 2009 29.7717121971311 2010 32.790952421642544 2011 32.519828357283274 2012 39.84406322526263 2013 39.09795186231895 2014 38.027371048002664 2015 34.77898537592644 2016 35.42344663372187 2017 37.396314869277354 2018 37.66316048432601 2019 33.946186715347324 2020 40.29477850838799 2021 42.21351282562206 2022 39.949136166374146