Year % of GNI 1981 5.400358797106274 1982 5.175245361133484 1983 5.089990916587322 1984 5.214845024182969 1985 4.8630983290940195 1986 4.915374030004693 1987 5.411006559077615 1988 5.36870326878505 1989 5.427307577646666 1990 5.385145033126492 1991 5.682078031366587 1992 5.988020792825046 1993 6.1425887275513915 1994 6.615299772476081 1995 6.6051298054230285 1996 7.389933144788684 1997 7.218879868162804 1998 7.421038044294465 1999 7.237182139851761 2000 8.095779230367276 2001 7.290518901522522 2002 7.576995012320538 2003 7.311657578653766 2004 7.368679008882688 2005 7.368416347908265 2006 7.253629972087869 2007 7.163112244239586 2008 7.313645512923994 2009 6.808693867925359 2010 6.873463413814118 2011 8.184985887935543 2012 9.355179100487591 2013 9.017205708769577 2014 8.794594887618832 2015 8.811093011849549 2016 8.278154798234278 2017 8.335769858159319 2018 7.895434501001608 2019 8.04348851319521 2020 7.893555248582835 2021 7.714243706251241