Annual % of GNI
1971 21.916747269607068
1972 18.593334536249817
1973 15.40922753977859
1974 16.033692104187566
1975 25.45876059997827
1976 29.362521421980073
1977 24.63870258363715
1978 26.565753616058235
1979 28.86577778383591
1980 28.86029608108328
1981 32.0817721653315
1982 29.188442538657505
1983 26.59923305254478
1984 26.552908293789038
1985 23.169369291370455
1986 24.283876331409452
1987 27.057714303527177
1988 29.99599152220214
1989 27.315137698328346
1990 28.610180113623283
1991 29.251331299245553
1992 27.300063281307146
1993 25.665724819688002
1994 25.429368885905674
1995 23.065630897381023
1996 18.837396886886662
1997 20.778363840045788
1998 19.53744012562659
1999 20.6179249267118
2000 16.29600808649267
2001 16.909160359298514
2002 20.272444697182948
2003 18.845585907300507
2004 16.35709481891924
2005 15.3397404742801
2006 12.856753571898615
2007 15.048443942398388
2008 19.83803685935904
2009 16.196346354663653
2010 19.30207352306977
2011 18.707501507837765
2012 18.67629066067159
2013 21.761676451478603
2014 26.15248418514985
2015 29.075052025427773
2016 27.420415862629806
2017 32.036014280615156
2018 30.88844123275197
2019 31.61141121118701
2020 27.11497698307491
2021 30.26854058209897
2022 30.086908836773567