Annual % of GNI
1975 19.874691528552297
1976 14.968598908052073
1977 16.37359365723073
1978 16.277990586204027
1979 16.081829314590653
1980 25.34199698011799
1981 23.33313537501528
1982 24.34757721535053
1983 22.690882188881716
1984 26.089611967602323
1985 26.395208246110318
1986 27.17673226481736
1987 26.6344422796236
1988 27.989524048647223
1989 28.733388870271764
1990 31.333754138012125
1991 26.9877845787808
1992 27.318363945578024
1993 25.728876502669262
1994 24.458163283699832
1995 22.555920402735634
1996 25.199168476105438
1997 25.394277675600517
1998 35.437887422050245
1999 33.51719037015926
2000 33.013345496531294
2001 39.22879807455504
2002 38.49685922353997
2003 39.70149242597149
2004 39.700116071323635
2005 38.93343970409927
2006 40.124240322725704
2007 40.068433413129476
2008 40.26796952080791
2009 35.96644909321393
2010 35.49597670623357
2011 34.292719301532834
2012 31.904796463410943
2013 33.06189568313384
2014 25.83678507780843
2015 28.70334374003481
2016 28.6673202351079
2017 29.0393419988362
2018 27.737871430074208
2019 27.646946477752696
2020 27.96316328067464
2021 28.612371244675614
2022 27.166080745792552