Year	% of GNI
1996	33.221891025981314
1997	33.28459724846053
1998	32.71852060253346
1999	31.141838427416943
2000	31.344902148559996
2001	30.630465057165445
2002	30.373952426488838
2003	31.25698629269188
2004	32.50189171409796
2005	33.01808382255877
2006	34.393461932047785
2007	35.974725335066694
2008	36.354349631941254
2009	35.283028696554794
2010	36.686425999493146
2011	36.36809810660716
2012	36.18168663887329
2013	36.79755004739255
2014	37.521211961195554
2015	37.54027578316304
2016	36.958616792478345
2017	37.70102996354821
2018	37.651461880245286
2019	37.16579459253617
2020	37.397525327685514
2021	38.750299408693316