Year % of GNI 1990 0.312906559684651 1991 0.384205616869873 1992 0.482571382876983 1993 0.539045151209986 1994 0.624694488751812 1995 0.659142591871285 1996 0.688789856239842 1997 0.735992195651119 1998 0.81669706268921 1999 1.09764305923886 2000 1.08388927450681 2001 1.11352233953627 2002 0.930449471775507 2003 1.00381401777544 2004 0.854977839209431 2005 0.910351060973083 2006 0.705121093206487 2007 0.664134528497038 2008 0.633461758279855 2009 0.823780524199537 2010 0.822345813820655 2011 0.715496496781344 2012 0.852994128824387 2013 0.882355914631196 2014 1.04084827880412 2015 1.01200887017082 2016 1.50475688014651 2017 1.59573095787708 2018 1.78565045838675 2019 1.58795489384147 2020 1.79084226996998 2021 2.02006259208093