Year % of GNI 1976 18.158775404944652 1977 21.584852175489146 1978 21.340154388050056 1979 20.46067698888626 1980 22.144148818648688 1981 22.556967147506736 1982 14.471680787302526 1983 16.726226458403737 1984 15.051825887920874 1985 17.997228929912023 1986 16.314031431068482 1987 12.724836691279728 1988 14.082228402989005 1989 14.87892366477452 1990 19.297075718231664 1991 19.553451321218926 1992 22.762595667943952 1993 15.48569554243003 1994 16.00955899226834 1995 15.08298131888317 1996 17.469815608196146 1997 17.558821181552116 1998 15.592757466898101 1999 23.647020391461503 2000 28.92409639527227 2001 19.98714051527028 2002 18.667578315741366 2003 18.946528094076257 2004 20.005533434702045 2005 23.975218029043567 2006 27.60729429752345 2007 28.46375181359493 2008 31.20806194731762 2009 25.414813446426006 2010 25.196677363018438 2011 28.037029499382438 2012 27.4524650878029 2013 27.652407283911746 2014 26.955466301263467 2015 20.995346871526397 2016 21.724324073289097 2017 22.630520238173897 2018 21.800167513937964 2019 21.394764290081763 2020 20.563313733560722 2021 24.24446399501768 2022 24.561324391603783 2023 24.036726314702637