Year % of GNI 1990 0.607882611985926 1991 0.739635913944876 1992 8.04902651240011 1993 9.06168764843202 1994 16.331820021926 1995 14.2498172782605 1996 10.1052418874379 1997 7.05199625931509 1998 11.6141583374855 1999 11.0211430302951 2000 6.09741865572794 2001 11.228967628342 2002 11.3598141107591 2003 11.3908176863055 2004 9.23326113710749 2005 4.6387377497289 2006 2.89422450732543 2007 2.10446917471798 2008 1.79323698386028 2009 2.69815614069017 2010 2.9686781904742 2011 2.15631253619379 2012 2.05539662133441 2013 1.97780438112443 2014 1.8000047644435 2015 2.29720483373197 2016 2.74595446024905 2017 2.41574456103607 2018 2.5124148757006 2019 2.61908038191087 2020 2.79686402926055 2021 2.32397758321398