Year % of GNI 1975 22.798478051384162 1976 23.072158051128017 1977 22.838105718124247 1978 23.129888395237007 1979 22.975281752385545 1980 21.896239756511182 1981 20.568691193921644 1982 20.238041785174044 1983 20.547992835504107 1984 21.19898116213963 1985 21.334133598832423 1986 21.78074731546848 1987 21.29821903288623 1988 22.069714978499285 1989 22.343701293666285 1990 22.240606268284736 1991 21.357122863549076 1992 20.632958612143113 1993 20.27347932815199 1994 21.33384169425785 1995 22.443824338642766 1996 22.20914509116629 1997 22.247752260488713 1998 22.60865600119913 1999 22.361606112701576 2000 22.807720365330002 2001 22.64952846667002 2002 22.311513622904965 2003 22.01844039173682 2004 22.630691225455788 2005 22.999446231809674 2006 23.670027600991517 2007 24.04679860248664 2008 23.29047132431207 2009 20.691141907593426 2010 21.910237043038396 2011 22.946643210257697 2012 22.53888790737614 2013 22.309565196641937 2014 22.746632360889294 2015 23.2601162948467 2016 23.340144177312126 2017 24.159006957860193 2018 24.663199880159056 2019 24.70339463200516 2020 24.09494741343868 2021 25.842756138903777