Annual % of GNI
1975 19.64056885211551
1976 20.678165132010776
1977 21.047433786910986
1978 22.878941687881916
1979 22.794013313226994
1980 25.463250971536112
1981 25.041089688459174
1982 18.918394285541495
1983 14.63894614636932
1984 15.792107718405083
1985 17.114495695375805
1986 19.803090026696157
1987 16.10651956067092
1988 27.38749963814453
1989 35.93830239592341
1990 26.13468713215898
1991 23.013121749536417
1992 21.120203454147145
1993 23.535583867376957
1994 14.285828540850424
1995 21.943950695562126
1996 22.659346613506287
1997 19.033771061409855
1998 23.52005444494235
1999 22.539410988393488
2000 16.903644187287203
2001 19.902307308263808
2002 29.34722220398705
2003 24.687275432949864
2004 23.115137559688616
2005 23.34190632858568
2006 25.66449287793126
2007 27.10420458507637
2008 24.065196783773885
2009 22.106899323127315
2010 24.631688768385086
2011 25.308887162080232
2012 20.709720071107114
2013 24.43260815530945
2014 22.664546658084777
2015 22.62513581078807
2016 25.282293430458235
2017 24.73695421845511
2018 23.355212288898244
2019 21.77143633489721
2020 22.655194157674167
2021 23.927669181990154
2022 21.42301586649199
2023 20.759835856286273