Year % of GNI 1989 19.70460197655486 1990 15.567125534835258 1991 12.669261378685308 1992 13.2146329342449 1993 12.573352700830128 1994 11.398521802126062 1995 16.135531530102718 1996 18.756229856580894 1997 16.58860095364704 1998 16.17806148749045 1999 19.327445678990916 2000 17.84678530911814 2001 13.872651502703276 2002 16.089205564435126 2003 15.642123274533015 2004 15.881958721846772 2005 13.299871580161364 2006 15.84317793220683 2007 18.259419691867773 2008 16.06549619513323 2009 16.925398742403893 2010 14.814390242016787