Year % of GNI 1977 20.507666048221967 1978 22.016986512027025 1979 22.232846732552467 1980 19.809847809926733 1981 30.712176255922213 1982 37.80595465461744 1983 45.961366389847285 1984 39.53150403544986 1985 36.78121210846015 1986 35.87865590360065 1987 38.55578995591501 1988 39.442701787583566 1989 35.55095998628155 1990 42.40152086236929 1991 42.36603608667543 1992 38.480877074911184 1993 49.55935744381636 1994 41.18281886960673 1995 38.98237571006005 1996 40.02412892199184 1997 31.083748247816807 1998 40.73214786768465 1999 30.260668611646846 2000 41.00810766917103 2001 49.19679293261812 2002 75.51364195232291 2003 68.28098242198591 2004 80.46053614249357 2005 54.28447252339568 2006 67.56707417025142 2007 67.95953140262931 2008 68.79854293973983 2009 78.59169344856251 2010 76.67386789561561 2011 71.27079521430468 2012 76.96579000860085 2013 71.83345045797999 2014 76.94882988495989 2015 68.31318623454351 2016 64.49968964734701 2017 55.92076304725484 2018 52.733873375909944 2019 48.01006579281292 2020 67.97390534102509 2021 70.14245993812838 2022 60.31676169080485