Year	% of GNI
1981	30.8963790859472
1982	28.8027766952598
1983	31.3339884264466
1984	24.7934845793106
1985	18.92175660095
1986	19.239352988277
1987	22.5370628389477
1988	23.2807136580729
1989	22.875202002444
1990	22.7752172675084
1991	21.0786902159133
1992	20.5111425828866
1993	20.0525991616318
1994	21.8679284100559
1995	21.3475028455262
1996	21.6558256092225
1997	22.7791630969065
1998	25.9909226781353
1999	31.7241476597095
2000	30.5147872215537
2001	31.5979627925909
2002	32.1991079469736
2003	32.5469330414108
2004	33.1381285443744
2005	34.4128440399832
2006	34.0924600546176
2007	33.7254813347623
2008	32.9368154434153
2009	34.0198904603433
2010	35.7413888920853
2011	33.2828981692577
2012	31.6412103983061
2013	32.5291779080554
2014	33.4881885520026
2015	31.9801066685069
2016	31.5508445861922
2017	31.9625259760282
2018	30.5502411219153
2019	28.8651129066244
2020	23.0698666190504
2021	19.5193767614988