Year	% of GNI
1987	6.196099028452759
1988	4.400477657360511
1989	5.148993431713929
1990	1.7252427799558374
1991	0.02924586935760609
1996	0.6203609838472477
1997	2.786153841732845
1998	4.4545829592806365
2001	6.641118707179805
2002	8.589188902090518
2003	7.825337259709398
2004	9.809836806622796
2005	7.655462283152833
2006	9.092974145190542
2007	8.785603014951073
2008	7.897393707124642
2009	9.931384219158783
2010	11.49416181905817
2011	11.083989216038212
2012	12.737128726195907
2013	12.89051346192471
2014	14.426307638799926
2015	14.548818602939757
2016	15.581140842204077
2017	16.31511252337654
2018	16.852142111874812
2019	21.153672482389783
2020	21.24104728102177
2021	18.371208101404328