Annual % of GNI
1970 28.010285922812486
1971 27.257951995596407
1972 26.70130118088365
1973 27.279695430054982
1974 26.126823336046915
1975 26.872586331518534
1976 24.5881348250039
1977 21.30999944200632
1978 20.81652242891368
1979 21.451893087673387
1980 22.100747408107036
1981 20.509589793725368
1982 19.403175820127803
1983 21.492922388625164
1984 23.899982777281455
1985 23.734385419246102
1986 24.07268620578464
1987 24.159257645449884
1988 24.880570578234522
1989 25.626368466905415
1990 24.63212402539932
1991 21.577338206956515
1992 18.782549008388713
1993 16.875509462617817
1994 20.321220461693784
1995 23.236537621891383
1996 23.189774557659078
1997 23.72301074597315
1998 24.7577862264928
1999 25.701980110776553
2000 26.798321252397177
2001 27.19880786739575
2002 26.35972681605092
2003 27.32732767711486
2004 27.63707974960568
2005 28.000771027928945
2006 30.348213570371126
2007 31.608288587105715
2008 30.971518453272346
2009 26.709759239185246
2010 28.37014832033591
2011 28.451965630702098
2012 27.074047462935074
2013 26.73635827135488
2014 26.995028128224725
2015 27.267590073648712
2016 26.931990492522353
2017 28.039969851163107
2018 28.051005801707316
2019 29.50736970933356
2020 30.01130733092197
2021 31.655247896829195
2022 32.55672074479812
2023 32.22323313138002