Year	% of GNI
1970	2.062887897558314
1971	1.3155961262672
1972	1.353370460804913
1973	3.499460105596051
1974	4.703811454082988
1975	2.036500452747473
1976	2.518552212776287
1977	2.635774156698643
1978	4.558019212452038
1979	10.812653841220756
1980	12.90181813654834
1981	7.035342596783414
1982	5.427543040885707
1983	7.561176139064604
1984	7.997803469024248
1985	8.180061410193481
1986	3.737743526096572
1987	4.36992051165097
1988	8.910645859707024
1989	8.490086939112157
1990	5.897381391213081
1991	2.404182211098335
1992	2.06828381247514
1993	1.7324124731850619
1994	2.446644407414773
1995	2.610268351558287
1996	2.272832553886382
1997	1.978350831131102
1998	1.013281457880389
1999	1.616376118383506
2000	2.273082652984237
2001	1.2698127875851482
2002	1.434132557095253
2003	2.105883345788034
2004	4.345916279419316
2005	5.509971688187473
2006	9.85034929398093
2007	9.579541615441334
2008	7.758265630174809
2009	5.656720718189655
2010	6.542425566207949
2011	7.505898013565225
2012	6.161442243180201
2013	4.434968450263109
2014	3.040126804180097
2015	2.2907245473395257
2016	2.915950688342643
2017	3.7495548791463285
2018	3.844757743219205
2019	1.651424966921855
2020	2.164561082118907
2021	7.640820792086638