Year % of GNI 1990 25.154592484242208 1991 14.398865778298934 1992 15.531643347430531 1993 11.516239954091507 1994 15.887913328549343 1995 20.03332802655526 1996 22.18382459322631 1997 16.71950250369802 1998 11.1701226632656 1999 18.776154777193003 2000 34.93183598054033 2001 29.861488167934347 2002 27.42610124655816 2003 48.31854827897759 2004 43.95125878029493 2005 62.506924975932904 2006 67.94418137866955 2007 63.36903428711078 2008 65.73359466711544 2009 42.82651157036178 2010 51.82391388995397 2011 21.037413010631017 2012 46.56434060933687 2013 30.429799318337313 2014 13.10331048529049 2015 5.60368806334216 2016 1.8088547713589171 2017 20.99511713302108 2018 30.496034779959633 2019 11.223028898289478 2020 4.02787168852748 2021 40.15978030579377