Year % of GNI 1990 0 1991 0 1992 0.0384086699688132 1993 0.0154335756007855 1994 0.144678275091186 1995 0.320885557848152 1996 0.342543279677918 1997 0.363688302234564 1998 0.184235178434794 1999 0.358925692669845 2000 0.485490358518106 2001 0.322247524463282 2002 0.673472404349826 2003 0.417032675483555 2004 0.289710031749574 2005 0.190093909744352 2006 0.296522697698357 2007 0.265299643716306 2008 0.228807134281363 2009 0.269499893764257 2010 0.637904243735004 2011 0.878007633634773 2012 0.732324264549575 2013 0.534898563165157 2014 0.678032683708338 2015 0.802517904556132 2016 1.61405481677628 2017 1.51402472269762 2018 1.9248916770508 2019 2.48157576385314 2020 2.38856267848863 2021 4.49256054102805