Year	% of GNI
1990	1.7421527170900595
1991	2.1253041135007558
1992	2.3137875668358228
1993	2.485332895564121
1994	2.414800364524154
1995	2.363364040045085
1996	2.3395077361393857
1997	2.453377561756451
1998	2.601285555131724
1999	2.6789469624467213
2000	2.8011993413739997
2001	2.986401276742537
2002	3.083590602368
2003	2.9004990181174004
2004	2.865392747528358
2005	2.763338506877729
2006	2.662800258786301
2007	2.452596010197311
2008	2.2705106773838164
2009	2.3678185587390885
2010	2.1688691363336883
2011	2.1227918842566225
2012	2.225417530878687
2013	2.26422538594617
2014	2.332227744387318
2015	2.4760252922409296
2016	2.52488460310062
2017	2.5849085123923574
2018	2.711208869067719
2019	2.764414361985561
2020	2.8005143715597947
2021	2.7909123661565545