Year % of GNI 1989 21.3815389521871 1990 25.7624545567003 1991 15.8377900198566 1992 17.5453216431492 1993 17.878594927862 1994 16.7542160264571 1995 15.4829985517386 1996 17.6139112206322 1997 17.2716366519693 1998 11.7091916693509 1999 15.8384051466024 2000 23.598079922396 2001 18.6840608941015 2002 17.3642147107411 2003 19.4578242870144 2004 21.0122921316798 2005 24.6674055699822 2006 27.623412105104 2007 24.9760424993426 2008 22.428714277362 2009 15.8381940608449 2010 18.6437854015065 2011 21.4655658496158 2012 17.9059987170448 2013 14.2371072710815 2014 14.4443500783641 2015 12.2018763505715 2016 9.78572607865503 2017 10.658933761159 2018 14.752902797832 2019 13.8632700577566 2020 9.19382458700127 2021 16.0389405897225