Year	% of GNI
1970	6.09291227125865
1971	6.8583807691738
1972	7.4290581490732
1973	8.09635985183989
1974	9.49924113917675
1975	10.0139151374595
1976	11.4857913442776
1977	12.2814082766871
1978	12.4949705442356
1979	12.443634604186
1980	14.2486636514713
1981	15.0123895423819
1982	15.5075143644707
1983	14.9185140454116
1984	14.2746099032764
1985	15.3624837567412
1986	16.7971333117611
1987	17.375305790577
1988	15.8934111329208
1989	15.0345801545822
1990	14.5073333878402
1991	14.5676474619725
1992	14.5572816501115
1993	14.8681069031355
1994	13.4248234500608
1995	12.6575709724893
1996	12.7959466871554
1997	12.2133828496316
1998	14.3526556426449
1999	15.0771585346791
2000	14.4495796762391
2001	16.1139950798321
2002	16.9368851299505
2003	17.5122767640237
2004	17.5039551619084
2005	16.7198038395012
2006	14.9769204669731
2007	14.1524373131263
2008	15.7713131566144
2009	16.8951327079006
2010	13.7660604866586
2011	14.0093898979397
2012	14.5054536052071
2013	15.0813883792386
2014	14.8539793875327
2015	16.540305088524
2016	16.5751561862972
2017	16.4876792385938
2018	18.2630452034756
2019	19.7643680197191
2020	22.3162523528241
2021	20.8251953060998