Year % of GNI 1990 6.24368958578726 1991 7.96360489734662 1992 13.3470379894876 1993 22.409645580036 1994 16.6727915041421 1995 11.0254360671786 1996 10.389478828678 1997 12.0671887294638 1998 13.0124056661862 1999 14.4524760803414 2000 14.7614126114839 2001 13.7504621804532 2002 13.8979007379914 2003 12.3519559371353 2004 10.6469385137705 2005 10.410918025088 2006 9.03441499557365 2007 8.10419638351554 2008 6.38737003729955 2009 8.58480312507852 2010 6.18726747839919 2011 4.91207589946347 2012 4.69471703249561 2013 5.00475835302667 2014 5.4316654235878 2015 5.64724015589449 2016 6.35970968477557 2017 7.42116502922349 2018 7.06905237987455 2019 7.44612031627484 2020 7.52614970802103 2021 7.3595855542568