Annual % of GNI
1975 12.98293413260251
1976 14.119893853338215
1977 14.899625456917533
1978 14.401737353543052
1979 15.031732232191723
1980 14.439176207651213
1981 16.627909373753607
1982 16.855301750591433
1983 16.484592572787676
1984 16.237648757248564
1985 17.156205812081296
1986 16.84298587329475
1987 17.957248970186654
1988 18.626118722700294
1989 20.201864000004697
1990 21.23269525172781
1991 22.00179088723281
1992 23.171875076465614
1993 22.954264614391565
1994 24.961454096171074
1995 25.362672646848516
1996 25.331196796672874
1997 25.94919395054374
1998 24.997655104067473
1999 24.84527749503863
2000 24.808464561984664
2001 25.11806835298691
2002 26.94312048180825
2003 28.69873045708903
2004 30.85897083970102
2005 31.610511478411276
2006 33.32314020066202
2007 33.96950526423043
2008 32.64294957556813
2009 33.16061913129699
2010 34.53513521418212
2011 33.297343168020355
2012 33.37712772850433
2013 32.640189495656024
2014 31.942175636787642
2015 31.084032005574674
2016 30.718830863048417
2017 30.617309258834737
2018 30.211876578723814
2019 29.06839962340608
2020 28.523179035921704
2021 29.353507401128113
2022 28.807706001342105
2023 29.928137860903824