Year	% of GNI
1996	18.0838444096749
1997	18.4720938405118
1998	19.5519106225047
1999	22.014313839347
2000	25.4369054916018
2001	24.1460887845437
2002	24.1637760868678
2003	21.389846627717
2004	21.6066725394869
2005	19.8027923338588
2006	18.9019552857542
2007	17.4260954345379
2008	12.633929217633
2009	11.1315282611892
2010	17.8678355501669
2011	20.6040458063205
2012	20.4001037237557
2013	19.3350848337092
2014	19.9506238327354
2015	15.5857564608352
2016	16.0937055320308
2017	17.0336846502378
2018	18.8415864238251
2019	18.8567413568411
2020	20.4016694393897
2021	20.1527441614582