Year	% of GNI
1970	13.7542027766483
1971	13.8515794688632
1972	13.8537996160461
1973	13.1778422942235
1974	14.2595863746167
1975	14.4558621721309
1976	13.7575440192374
1977	13.8205278833034
1978	13.621350926661
1979	13.8016193009763
1980	14.8646329525504
1981	15.545869444708
1982	15.2416210983279
1983	15.2167777887477
1984	14.9919655242008
1985	14.8850457292528
1986	14.6074598614938
1987	14.9567264482024
1988	15.6660412810244
1989	16.1836132628888
1990	16.6186126941824
1991	17.0767168476719
1992	16.9170319145551
1993	17.3091196020692
1994	16.9130081236616
1995	16.7795264560242
1996	16.5735456257675
1997	16.770955696496
1998	16.7830792131047
1999	16.7563330140219
2000	16.5840856904725
2001	16.9305489491271
2002	17.2275463296223
2003	17.5577467408051
2004	17.2521573723844
2005	16.7626572427008
2006	16.4084203448328
2007	17.0215870546621
2008	17.9659094619375
2009	18.018520954081
2010	17.42329861874
2011	17.1873657701367
2012	17.1571900820882
2013	16.7690721949337
2014	16.276557556355
2015	16.1241356024435
2016	16.161593247117
2017	15.9965157884866
2018	16.056238651263
2019	16.5305674476056
2020	16.8089410511094
2021	16.2010440080542