Year	% of GNI
1996	16.224270660707496
1997	15.942654819618294
1998	14.09284742255259
1999	12.309316485957545
2000	12.494017518319634
2001	11.509488412093821
2002	11.391895790038593
2003	12.34048501107983
2004	13.39205343620725
2005	13.51759033212874
2006	14.532676219793585
2007	15.926074851665051
2008	14.7260978752478
2009	13.867814591150076
2010	15.011715663640816
2011	13.620572404184676
2012	14.246580870250952
2013	14.560902332366311
2014	14.963486091623746
2015	15.047580987201426
2016	14.618421561229795
2017	15.327214603520655
2018	14.329794470124464
2019	13.31584653746321
2020	12.587595698700431
2021	13.161360818884328