Year	% of GNI
1990	3.73039125260595
1991	3.9765515100813142
1992	4.088926338723661
1993	4.327108648437068
1994	3.8368744201977987
1995	3.372695730475113
1996	3.193798016137076
1997	3.169338932609546
1998	3.456640437597461
1999	3.8676946663757743
2000	3.765652377927332
2001	3.959478645912402
2002	4.067505223841948
2003	4.0934614084858145
2004	3.9255200669765857
2005	3.7318604036750074
2006	3.4966324111650553
2007	3.086997124241784
2008	2.6603894916915136
2009	2.917148951051114
2010	2.72906970418591
2011	2.5217895569655906
2012	2.5012140964504885
2013	2.5017698252385476
2014	2.4917487098550066
2015	2.7256611713533396
2016	2.8076674423578685
2017	2.6818014889603403
2018	2.659595175541588
2019	2.7731194060140743
2020	2.8461663973979228
2021	2.663180972665629