Year % of GNI 1990 3.96576649770461 1991 6.40862896537213 1992 5.42739578905904 1993 5.20578977594177 1994 4.55448543173564 1995 4.86648887172751 1996 3.27019146507756 1997 3.27886115183906 1998 4.9285116953689 1999 4.30341558290772 2000 4.47148288630279 2001 1.82746669016355 2002 5.35438350110033 2003 5.59989535186877 2004 6.71939600903119 2005 4.44702649387759 2006 4.83977730815347 2007 4.51694276929956 2008 1.35359422101923 2009 2.29647050581089 2010 0.98092395074492 2011 0.384770705033258 2012 1.36632902124626 2013 1.22187639257021 2014 1.5088310941665 2015 4.17875542285615 2016 4.3190675277089 2017 4.0458409008681 2018 4.4484320108024 2019 6.80315333520744 2020 8.69046750525487 2021 9.2052074983424