Year % of GNI 1980 8.198972824190864 1981 3.748781745323983 1982 1.6580698846295054 1983 -0.19942636017172707 1984 3.1576286252594774 1985 3.5274098221768564 1986 16.5258195121599 1987 14.816535917090299 1988 6.75275550141745 1989 4.436340185938756 1990 5.5658280089389125 1991 5.144804818584363 1992 10.577453894200328 1993 9.707201154974305 1994 11.551088329286602 1995 13.508097953196343 1996 17.087191964814583 1997 17.684924654749516 1999 25.08752878984373 2000 22.539982848678534 2001 20.125887182394933 2002 27.60405531888213 2003 31.513869589803928 2004 32.65542007330242 2005 12.580279255977892 2006 9.811432599722414 2007 14.096241121442585 2008 11.859303495666905 2009 14.088972076227723 2010 14.881716757197163 2011 16.861723765648296 2012 16.521561279313826 2013 17.649055166405947 2014 21.945103571055633 2015 23.137933956246286 2016 21.37186373375853 2017 21.612847838386468 2018 22.828206007559764 2019 22.845461810429303 2020 22.87465717302013