Year	% of GNI
1977	37.555350355005125
1978	30.293071884955065
1979	35.69294525593228
1980	39.50449990587305
1989	20.57523776431987
1990	22.77736331881553
1991	13.589658093175784
1992	22.259729076133535
1993	22.928928708026948
1994	22.92609037043734
1995	24.439557720802586
1996	26.684779770548097
1997	25.52024719141959
1998	22.522683163528917
1999	26.159254352649633
2000	29.158785751467594
2005	40.376077287852674
2006	42.34925266776666
2007	41.11179597616745
2008	43.28688343504978
2009	30.893900969692645
2010	35.56972936983539
2011	40.35023807954412
2012	39.79864724527851
2013	37.23372995456813
2014	33.55396615548118
2015	24.411126550204543
2016	23.99948341492119
2017	27.953807529614338
2018	31.600870769026635
2019	29.428991622687256
2020	23.590392712086725
2021	28.815498767013658