Annual % of GNI
1975 25.282505878466967
1976 22.760251594082614
1977 23.215267342011764
1978 23.84381610545492
1979 22.807239441620588
1980 20.748908022324187
1981 18.827032957207273
1982 18.916941851327348
1983 18.791657565363355
1984 20.49877702975327
1985 21.16166075422145
1986 22.070189002367755
1987 21.962764897498953
1988 23.16087885487136
1989 22.542039473930547
1990 22.053449294917677
1991 21.43362016558354
1992 19.57870769755874
1993 19.34446432271521
1994 19.10618331210421
1995 21.490407805881485
1996 21.2999677877016
1997 22.333229561776584
1998 22.99454332706299
1999 22.492728319370784
2000 22.489985700858256
2001 22.39156625067169
2002 23.227258380859656
2003 23.82460549539153
2004 23.022529265275406
2005 22.432795947009932
2006 22.124938427650523
2007 21.542483603218976
2008 20.119024430166867
2009 19.599480361367313
2010 18.919048764414278
2011 18.17624162350149
2012 18.66627535415774
2013 19.383007756000975
2014 19.649832733775447
2015 21.01280995998461
2016 21.865903242326496
2017 22.167699633475273
2018 22.314220216085495
2019 22.893974803057418
2020 21.03553080132632
2021 22.17391897164409
2022 21.989827178972572
2023 23.01160666971668