Annual % of GNI
1974 5.432081915915504
1975 7.817396131800936
1976 10.35031269047659
1977 14.027277344555271
1978 21.084036427432103
1979 19.650798680834587
1980 17.35227775947334
1981 10.389062705255334
1982 6.957459609282295
1983 9.208761564937172
1984 2.480061982956595
1985 8.573034534811068
1986 10.007209660652476
1987 4.486970945223658
1988 13.586847871879785
1989 6.764701652825518
1990 6.835154860789435
1991 8.188128053443537
1992 6.054042228601831
1993 5.409916802100254
1994 9.49095845373067
1995 8.441784993364708
1996 13.264872360894826
1997 11.27156240909383
1998 12.96373025602715
1999 10.152986342154547
2000 12.903053035155871
2001 14.580289346353347
2002 13.890889972048376
2003 13.372408157579232
2004 12.214425445612095
2005 19.022797283411727
2006 19.457305035892684
2007 17.608236960916226
2008 20.571996071027144
2009 15.612535086893864
2010 23.020480893072584
2011 20.862052934584387
2012 22.542449309461453
2013 23.27856755101867
2014 23.89976347829723
2015 23.032568673884732
2016 20.63790191265775
2017 19.712576570133596
2018 21.955777238634973
2019 23.9206402572387
2020 13.646803874172798
2021 16.68603003248521
2022 24.001125778826633