Year % of GNI 1971 22.686862670964977 1972 22.779144914688032 1973 23.975221550654258 1974 23.015624462353607 1975 21.75239791977344 1976 22.261779008207707 1977 22.62913976348885 1978 23.434966915373515 1979 23.444328905437114 1980 22.336074678988464 1981 22.223922648538768 1982 21.19581876692703 1983 20.558851551003762 1984 21.98499426493394 1985 21.171316410738648 1986 20.76929406629824 1987 21.07760740611379 1988 21.968766194200263 1989 21.855881724797026 1990 21.4499243408458 1991 20.913722204565143 1992 20.004651564778182 1993 19.646370118647237 1994 20.481703937938928 1995 21.417600225635947 1996 23.941990600876768 1997 24.209021353220308 1998 24.069489328757303 1999 23.566597973202835 2000 23.72673228376274 2001 22.651359072266384 2002 21.78778876858073 2003 21.491908779101617 2004 22.048433304621152 2005 22.181729440113696 2006 22.77334955665879 2007 22.51833592750419 2008 21.227136676020617 2009 19.28725961324223 2010 20.41036661760477 2011 21.05415256212239 2012 21.419699110034394 2013 21.49512097865534 2014 22.07160480251119 2015 22.304473227144587 2016 22.073400900189682 2017 22.644697945806083 2018 22.75741646575418 2019 22.891354861570942 2020 22.183451526016036 2021 23.00136122162259 2022 22.459185561525675