Year % of GNI 1993 9.71831968390594 1994 4.99651156900493 1995 4.07235558280508 1996 2.46575206085262 1997 5.36038819580034 1998 6.51270538691437 1999 4.12573356355943 2000 6.66384809120051 2001 3.99802717637128 2002 4.07294007612957 2003 7.28247918087498 2004 11.9071142956601 2005 14.2886367835795 2006 16.5279812846028 2007 15.9836045729588 2008 17.618313152958 2009 13.1412895567199 2010 13.8141032941378 2011 19.0510859463291 2012 17.9681957087443 2013 15.5602443018 2014 14.7330441306451 2015 15.6429835568789 2016 12.592414346327 2017 13.8844219175551 2018 14.6280146355997 2019 13.3100467451982 2020 12.0051851558509 2021 13.1664689984164