Year % of GNI 1991 21.458991836433 1992 25.4490968098582 1993 23.3428459717695 1994 27.3348827997397 1995 26.5620715943221 1996 24.1196096055191 1997 21.8137181962374 1998 22.3662596796261 1999 18.6523574743122 2000 21.8585918498954 2001 15.9358964864949 2002 19.5964972957283 2003 18.322066530082 2004 23.7356491502285 2005 24.2088455218598 2006 28.8405093098948 2007 20.8077065014744 2008 21.3848438671234 2009 11.0641340678304 2010 13.770474648632 2011 9.41086809494048 2012 10.7494464415454 2013 14.9315919850374 2014 18.5120209632716 2015 11.3588127668969 2016 0.171292860407575 2017 7.80623614079455 2018 7.70934961572507 2019 8.39523034597591 2020 11.5870992340811 2021 -1.09293278139142