Year	% of GNI
1979	22.5091130747409
1980	26.9535928210863
1981	26.3618114479847
1982	27.9545357163781
1983	30.2661058043982
1984	27.8664613858168
1985	28.0128192303874
1986	22.212759989497
1987	26.9885546917145
1988	21.4153824817718
1989	20.4963098353005
1990	20.4990600915673
1991	18.7307150136102
1992	16.892574810922
1993	20.3781127523095
1994	20.7157856912718
1995	23.4838094082891
1996	23.5075266747216
1997	24.1517948116988
1998	23.9792960680652
1999	22.9259909661718
2000	21.8569366998818
2001	20.987713218675
2002	19.9168391379965
2003	19.4515150929696
2004	22.4397732983134
2005	21.7540826019509
2006	23.9006691191759
2007	23.654606295926
2008	23.5552889164556
2009	23.3747527057572
2010	24.046831199423
2011	24.211623073177
2012	23.7409555566387
2013	20.7567429886522
2014	21.8000526747003
2015	22.3384257680977
2016	22.9133948649879
2017	23.7865270899309
2018	24.3402654010532
2019	24.3483806254871
2020	25.7151505062494
2021	24.1784165971384