Annual % of GNI
1974 32.309675279540386
1975 32.90861611110228
1976 34.299796828280165
1977 32.11766177091736
1978 31.14096944271864
1979 34.077776483313166
1980 29.30053875109967
1981 33.17885328864457
1982 32.616263177150394
1983 29.507162583652168
1984 30.157998127468183
1985 35.64609035895913
1986 39.37897008099429
1987 24.763990434201997
1988 29.234429409840747
1989 26.655745404023296
1990 22.058525601899653
1991 18.885639816260667
1992 18.65787619779671
1993 18.800281664579664
1994 18.657286902243634
1995 19.9870541872819
1996 22.15808992941197
1997 20.822567834047735
1998 26.01260100289785
1999 22.125175379100714
2000 21.720880232748613
2001 22.06696875445863
2002 22.886418905768238
2003 21.025098755494618
2004 22.617003130401688
2005 23.893778979309634
2006 24.894215400682448
2007 24.134643244130306
2008 24.865724648322324
2009 22.21164169652642
2010 21.981962094532935
2011 23.228013404843647
2012 23.55666911191063
2013 24.12884061133273
2014 25.119539358685685
2015 25.500128279854536
2016 25.24845016805488
2017 26.38640775173587
2018 28.391589805270506
2019 26.808546219751573
2020 27.400186638340237
2021 31.026639417664168
2022 30.323212081343677
2023 26.287012776537345