Annual base year varies by country
1960 22.088900816489986
1961 23.207481613155597
1962 24.125863504360815
1963 24.888836800760526
1964 25.647091863941263
1965 26.630436420811627
1966 27.541305528684347
1967 27.978952125805478
1968 28.563106742549298
1969 29.76532446347392
1970 32.037143338335234
1971 34.47880184490403
1972 36.04133187424351
1973 38.311760519979856
1974 41.099052317851665
1975 43.427980890696034
1976 44.86379441837046
1977 46.25489425822242
1978 47.89501967807575
1979 49.944035987082216
1980 52.66657997714189
1981 54.86553545278349
1982 57.378957745690826
1983 58.990123613421254
1984 60.16352349921642
1985 61.44183335006518
1986 63.2848076318151
1987 64.09464025019766
1988 65.17813532422072
1989 67.05465739698924
1990 69.33226502532138
1991 71.47122070095718
1992 75.26362421346371
1993 78.18661043188335
1994 79.790693208834
1995 81.37160588060979
1996 81.86169038413067
1997 82.08502243694252
1998 82.65014941602837
1999 82.93375112322565
2000 82.52788246352284
2001 83.60486712906753
2002 84.75704739317557
2003 85.87690286844939
2004 86.83494204723658
2005 87.18680359902108
2006 87.53318033927434
2007 89.08275677800368
2008 89.89281338641095
2009 91.54854159912531
2010 92.13928215687984
2011 93.12469680262932
2012 94.51829749551422
2013 96.37028115557762
2014 98.18005707256827
2015 100
2016 101.32775222269545
2017 102.85145713969877
2018 104.9161923675617
2019 107.15123151003891
2020 109.15773009301108
2021 112.45389847134383
2022 118.37833579445314
2023 126.2244614427879