Annual % of GNI
1975 20.255091742262266
1976 21.669242662831532
1977 22.235374317039586
1978 22.783515700383624
1979 29.80395243542286
1980 28.70012054240171
1981 27.873963494536525
1982 26.641232284856116
1983 29.919105456789737
1984 27.919613841368168
1985 35.50027155572527
1986 39.3719903657944
1987 43.98746264111737
1988 53.382452548956834
1989 51.97174352987673
1990 42.8440147828491
1991 44.29015168854042
1992 40.30606566499722
1993 40.8555443918301
1994 30.952733272707405
1995 29.208478348003414
1996 38.946479860965766
1997 38.60514400622604
1998 39.54008351588729
1999 41.684406701996586
2000 41.996554278781836
2001 44.50490101388483
2002 36.06413311884511
2003 39.43583482540831
2004 38.382145472454525
2005 44.15148532545955
2006 43.79719293158822
2007 46.11496903872031
2008 39.03277565891021
2009 27.668464202790958
2010 33.32927003159012
2011 38.85822662988571
2012 36.205036165530686
2013 31.351632109485067
2014 37.58865865702121
2015 32.394002299780226
2016 32.945152250867835
2017 33.651666023876956
2018 29.580729194404167
2019 27.406772336763183
2020 24.110258225352137
2021 31.197775389244505
2022 34.525206027949885