Year % of GNI 1976 13.2727974546895 1977 15.4908231837261 1978 15.6950830139984 1979 14.2652663979895 1980 16.6204735557908 1981 17.6339985759588 1982 17.8073203880632 1983 19.1509165774275 1984 17.2976740573621 1985 14.8389888027542 1986 19.2842151580423 1987 20.8330105728626 1988 17.7794122655046 1989 17.6227136925319 1990 18.4788721896459 1991 21.9256557326271 1992 22.0419217258252 1993 16.6114259005221 1994 19.7199276815223 1995 17.6321540014596 1996 16.107396965149 1997 16.6229492323049 1998 18.0458904540438 1999 17.1960296333151 2000 19.5475850883206 2001 21.1373414010508 2002 21.9634958415047 2003 22.1240875639221 2004 22.7766734618764 2005 20.1641703773193 2006 18.3015875392073 2007 17.5617091546798 2008 12.9151652726992 2009 15.462895990805 2010 16.2011603264128 2011 15.6966443558879 2012 14.0979326157931 2013 14.902750905231 2014 15.5268646478911 2015 16.0445762793669 2016 14.5338437395157 2017 13.0909438393772 2018 12.0668092705686 2019 11.5773845769201 2020 14.8107045317492 2021 14.1015137625599