Year	% of GNI
1990	4.063729851013525
1991	4.075855310103298
1992	3.6732733086966745
1993	3.691879590042394
1994	3.697282367757808
1995	3.6659987319269494
1996	3.4335281936085633
1997	3.335758066423508
1998	3.2068164448414382
1999	3.023910836630336
2000	3.1855439107328825
2001	2.997069600913964
2002	2.839832862863159
2003	2.6324896238129916
2004	2.43282669114832
2005	2.2279428547976603
2006	2.124128242352877
2007	2.042169661038664
2008	3.3545347939503043
2009	3.0300496923029057
2010	2.847815158970134
2011	2.5327923818021945
2012	2.394004045596663
2013	2.3536991664122136
2014	2.225985670633013
2015	2.1480752622548684
2016	2.09194580406788
2017	2.0905704626400787
2018	2.0370448407989126
2019	1.9920262173741436
2020	1.9855409784872764
2021	1.8590432191657278