Year % of GNI 1990 6.24477485786145 1991 10.4104588909823 1992 8.49350433394986 1993 7.3836401338857 1994 8.57855997098735 1995 7.11571758590681 1996 2.73881857369428 1997 1.6608067367469 1998 0.985873826187971 1999 -1.08939242792412 2000 -1.45242492775767 2001 -0.0828959881796232 2002 1.25282908203528 2003 2.21526920891077 2004 3.23357821701839 2005 4.82874548737497 2006 4.80478054103169 2007 5.32759299116052 2008 4.79886103306129 2009 6.19918325746267 2010 5.02993191019241 2011 3.05419926835935 2012 2.64923750964417 2013 3.57948835445742 2014 4.11524519123227 2015 5.164745330557 2016 5.95726419809326 2017 5.34926539123246 2018 4.3497459455928 2019 4.38320593380471 2020 4.82723447420149 2021 1.60465579833321