Year	% of GNI
1990	5.59264745555504
1991	5.268011439962477
1992	5.870662233528987
1993	5.094133774563351
1994	6.057945648074155
1995	5.376094452826298
1996	4.354447448299244
1997	3.7754310756492604
1998	3.768895067845404
1999	3.5261644981545452
2000	2.9780307456295683
2001	3.6462386094697776
2002	4.227732093762827
2003	4.612317110203825
2004	4.390097186031613
2005	4.77390202139866
2006	5.04975342405397
2007	4.00560543818634
2008	3.5572653700686065
2009	4.148318855519798
2010	3.877098226830453
2011	3.5559352999115794
2012	3.3831197918513576
2013	3.4229902436045463
2014	2.9977875352072454
2015	3.0737443350170595
2016	3.1644287643934574
2017	3.467035029195389
2018	3.4173752249552387
2019	3.3109811199340866
2020	4.0975353525695475
2021	3.505091003878157