Year % of GNI 1990 3.4327424601562 1991 1.29000557160313 1992 2.98583838049109 1993 0.116345157381801 1994 2.55408788637875 1995 0.712277566491945 1996 0.341995843726302 1997 3.51733012365063 1998 3.29925099925274 1999 1.4057411170825 2000 -0.809080930554359 2001 2.47828314590461 2002 -0.836759891726916 2003 4.88403269923836 2004 4.26395036956611 2005 4.07605848475616 2006 6.23531935509818 2007 3.85989071812717 2008 0.76537933066303 2009 2.83930637525616 2010 1.06808639123526 2011 1.97232300026193 2012 0.635822326291799 2013 2.66199812390786 2014 4.70407508964757 2015 3.74326140800405 2016 4.3408075114049 2017 3.82492180042611 2018 4.86236858196725 2019 4.31678074193741 2020 3.38044159790187