Year % of GNI 1984 48.5046031379833 1985 46.2237177671369 1986 50.187112794976 1987 51.6250535744865 1988 48.6857229374169 1989 49.0148444626202 1990 63.5943849279645 1991 61.8385345997286 1992 36.9832731559944 1993 38.0162468427879 1994 33.8318160720563 1995 33.9322730792344 1996 31.7200872019477 1997 25.1460841780386 1998 23.2917647537764 1999 23.8390283692438 2000 28.829799109379 2001 21.8968822622231 2002 20.0629359684022 2003 18.2787683621857 2004 20.166029599462 2005 23.3308922897394 2006 29.5513444354276 2007 29.1424310836797 2008 27.7123147597477 2009 27.9109382096141 2010 25.8952063016125 2011 27.4360422547609 2012 25.8065753117023 2013 23.3614862856479 2014 23.7807943313381 2015 25.4253356112376 2016 26.1721321660417 2017 23.6962614938129 2018 21.2403622693315 2019 21.8426065634748 2020 28.4345335146565 2021 27.1205923897068