Year	% of GNI
1970	28.0102859228125
1971	27.2579519955964
1972	26.7013011808837
1973	27.279695430055
1974	26.1268233360469
1975	26.8725863315185
1976	24.5881348250039
1977	21.3099994420063
1978	20.8165224289137
1979	21.4518930876734
1980	22.100747408107
1981	20.5095897937254
1982	19.4031758201278
1983	21.4929223886252
1984	23.8999827772815
1985	23.7343854192461
1986	24.0726862057846
1987	24.1592576454499
1988	24.8805705782345
1989	25.6263684669054
1990	24.6321240253993
1991	21.5773382069565
1992	18.7825490083887
1993	16.8755094626178
1994	20.3212204616938
1995	23.2365376218914
1996	23.1897745576591
1997	23.7230107459731
1998	24.7577862264928
1999	25.7019801107766
2000	26.7983212523972
2001	27.1988078673958
2002	26.3597268160509
2003	27.3273276771149
2004	27.6370797496057
2005	28.0007710279289
2006	30.3482135703711
2007	31.6082885871057
2008	30.9715184532723
2009	26.7097592391852
2010	28.3701483203359
2011	28.4519656307021
2012	27.0740474629351
2013	26.7363659842316
2014	26.9950084481061
2015	27.2657438727397
2016	26.9457045561704
2017	28.0261045297178
2018	28.1025837640952
2019	29.5044603111673
2020	29.9239707553395
2021	30.3431933897672