Year	% of GNI
1998	40.67201133251225
1999	37.52809966689526
2000	38.9604787915192
2001	38.26677675703216
2002	32.909909484806164
2003	27.507096517911116
2004	24.552385418016247
2005	15.57503403653805
2006	24.40954188846335
2007	27.646110303886907
2008	21.11269530184162
2009	12.232095859373338
2010	23.045573809214243
2011	27.302466428355142