Annual base year varies by country
1960 5.521250149555322
1961 5.699145809146393
1962 5.694838852196073
1963 5.796786930705006
1964 5.987394662030997
1965 6.165809307333412
1966 6.331293186498158
1967 6.639487620424833
1968 6.7890488265769795
1969 7.111745138400341
1970 7.476762372466552
1971 7.864527226435346
1972 8.351268053451715
1973 9.101405218967168
1974 10.592221748430786
1975 12.338805895197641
1976 14.068668904879337
1977 15.674980773492187
1978 16.966210662140536
1979 18.431010398882506
1980 20.277197416921364
1981 22.208617394840758
1982 24.809019768834563
1983 27.32922122425423
1984 29.478037630069842
1985 30.85775908947368
1986 32.87847164456006
1987 35.18887632717263
1988 37.7153627250364
1989 41.19582264123083
1990 43.70554603988518
1991 45.025053608868824
1992 45.69150239591868
1993 46.0886661686587
1994 46.55876383708609
1995 47.62643896207431
1996 48.91778094462164
1997 49.5404295613078
1998 50.103013714471324
1999 50.34120394920599
2000 51.62528250117051
2001 54.01590387425952
2002 55.55012131573227
2003 57.20863670135052
2004 59.05777018368219
2005 61.3170305723149
2006 64.45363504999487
2007 67.66728036093424
2008 70.75955479441784
2009 74.26155891221596
2010 75.11694722675409
2011 79.77577436402673
2012 81.21585797241202
2013 81.08284141316496
2014 82.2219686561495
2015 81.70979054213423
2016 81.17396069834808
2017 84.1378109835792
2018 85.71860095611153
2019 88.68765562642835
2020 90.56235785446488
2021 93.3505683303578
2022 100
2023 106.55737568511417
