Year	% of GNI
1977	12.9927934190955
1978	19.2590123149885
1979	28.9813238081727
1980	30.8628942939114
1981	26.5360360908084
1982	27.9673378395771
1983	23.3482611002156
1984	23.8887224583257
1985	25.6706720312421
1986	16.1158691156082
1987	16.5279181929795
1988	16.4367394366975
1989	18.3351436898224
1990	13.9019303090614
1991	14.3215190464642
1992	13.4919383244869
1993	13.8169064416046
1994	17.4381078531533
1995	17.1047753226563
1996	16.7540270951786
1997	18.7545124007179
1998	18.0555985101955
1999	18.7203721755106
2000	17.7166489323643
2001	16.9411723537237
2002	17.329149638321
2003	17.351681616855
2004	18.7864239679427
2005	21.0495870058143
2006	25.3763903174894
2007	26.1357940947509
2008	24.4347045157198
2009	22.3080482053743
2010	24.2255007586726
2011	25.5889447571449
2012	24.2997906846482
2013	23.6026698003651
2014	22.1279364588477
2015	21.2788756893134
2016	21.1467907311941
2017	21.4694956071062
2018	21.3425057032291
2019	21.3222508028925
2020	20.1534974963515
2021	22.2200348283519