Annual % of GNI
1976 30.530738936089655
1977 46.440896694090725
1978 49.32614609522993
1979 28.12444292227215
1980 34.290954329599984
1981 23.975906115051504
1982 12.9361769248014
1983 18.98786603047951
1984 32.007295281730265
1985 34.57558853540779
1986 33.86425323082323
1987 37.273092943398446
1988 37.60230914564348
1989 31.16819862021542
1990 24.402967002575128
1991 22.35229819987343
1992 21.420884032917296
1993 21.81248970039204
1994 26.490755342324388
1995 23.116967975685736
1996 30.92155509063575
1997 22.14217857864134
1998 19.350789991934906
1999 25.679557875777736
2000 21.32104782094693
2001 20.010599064961454
2002 22.618344979954827
2003 20.74046208560116
2004 28.403061777773004
2005 30.668007695808488
2006 23.716064113266757
2007 20.075887744570675
2008 7.0438458210105654
2009 11.958482310364776
2010 17.528131207871617
2011 15.371394880925006
2012 23.652028622001247
2013 28.07640663828729
2014 8.480408944472863
2015 12.611736928094688
2016 7.942809484842365
2017 7.758954117541147
2018 5.669238533996375
2019 9.428795258951071
2020 -3.7098449149862622
2021 -11.579776602321735
2022 2.129362409461742
2023 3.1853370457237644