Year	% of GNI
1977	27.93286468555671
1978	23.727139512551833
1979	26.193456886687592
1980	27.972752868071648
1981	27.20563425799785
1982	23.53862101295348
1983	22.109535853981562
1984	22.02962508494812
1985	22.306505852245497
1986	19.587432701385247
1987	19.74227418242625
1988	20.123324238474332
1989	20.173357128131066
1990	20.898421490108785
1991	19.20027073539832
1992	19.235160683820837
1993	20.464591926813803
1994	21.158421989881425
1995	22.38388742380192
1996	23.349077675766427
1997	23.177260908688563
1998	22.32367528862386
1999	22.47097534900524
2000	23.476554943846004
2001	22.56147265455556
2002	23.699538724079286
2003	24.282480779026013
2004	25.827844075169764
2005	27.930454529534398
2006	29.76876460263103
2007	29.6638066747046
2008	29.927503308891314
2009	26.928457797121922
2010	28.588839035683158
2011	28.816565424975238
2012	28.28561557910933
2013	26.85271494982162
2014	25.83734073182734
2015	25.0106225861519
2016	25.35094326607356
2017	26.345425358757527
2018	27.17762982721304
2019	26.524607429501486
2020	25.29929646987707
2021	26.97164978948934
2022	28.008914411668187
2023	27.599072074485505