Annual % of GNI
1976 25.657165462533055
1977 28.631962446577454
1978 31.4952492319889
1979 30.710464077363746
1980 25.333602449344063
1981 24.856774369644643
1982 26.667090520095353
1983 30.401298505568494
1984 32.55551845905245
1985 32.75906540583685
1986 36.200178710277946
1987 39.650317480607
1988 41.74063000976088
1989 38.834113367655874
1990 39.06532473244282
1991 39.07741524927292
1992 38.18416136509886
1993 38.24900073273512
1994 37.99234036321435
1995 37.82146681685488
1996 36.092393243096815
1997 36.10784860415351
1998 38.21809844757745
1999 35.770259697910554
2000 34.121896996319336
2001 32.155253930226344
2002 31.57157605667251
2003 33.09734915208609
2004 35.52383025545487
2005 34.00580471272516
2006 32.98688973363678
2007 33.53851155228558
2008 33.31344268830656
2009 33.33311032075486
2010 34.992236478406966
2011 34.45801958208983
2012 34.305067073148074
2013 34.62837782692014
2014 34.81856359731047
2015 36.23532251477357
2016 36.65123683645619
2017 36.86379918694687
2018 35.711296931021664
2019 34.48277125937976
2020 35.91518532023606
2021 36.342379465484605
2022 33.949825556645095
2023 33.15363369261966