Year % of GNI 1992 5.518856691207459 1993 4.735021666373563 1994 4.260258960204387 1995 3.158609779385355 1996 3.1936352984972514 1997 3.2782423843213238 1998 2.9109888689263035 1999 2.9513963313569636 2000 3.1170489202286586 2001 3.029299146360354 2002 2.7399263117192114 2003 2.5012719514592607 2004 2.205321314573292 2005 1.9848620282698608 2006 1.9078206791163423 2007 1.6166805303914242 2008 1.3432792258449608 2009 1.508766880543176 2010 1.5895018106620822 2011 1.5084834386422161 2012 1.6140035352823614 2013 1.5412740008091488 2014 1.5054015085246137 2015 1.7947654510351863 2016 1.8524119742258127 2017 1.8010449041086596 2018 1.6573120210172902 2019 1.6163822116102253 2020 1.5591261478656728 2021 1.4976318472927697