Annual base year varies by country
1960 26.387954548234404
1961 26.47551181992987
1962 26.59957092377587
1963 26.8457017250442
1964 26.99727778435318
1965 27.28960679038882
1966 27.862959796116588
1967 27.96375683433066
1968 28.365678335131484
1969 29.01163023060629
1970 29.460429131214738
1971 30.890304405386495
1972 32.65909028326862
1973 36.97330748848541
1974 43.00571447723426
1975 44.24816125518104
1976 45.00916478920985
1977 45.91235404272523
1978 47.76807577288973
1979 50.2689258658652
1980 55.86240404236712
1981 59.144593643982745
1982 61.825591761730614
1983 63.78635309261072
1984 64.28893849550228
1985 63.34679450908048
1986 62.55317586699035
1987 62.886226453647296
1988 66.3014021590768
1989 69.05899050429728
1990 72.30298361876473
1991 75.50987053989459
1992 76.55772332363593
1993 79.20370123226122
1994 81.94631918143523
1995 84.54916234285862
1996 85.82266111359381
1997 86.75383030808777
1998 85.60100328801155
1999 82.53834510766202
2000 85.7271955144877
2001 84.17173407722206
2002 83.41678463623421
2003 81.91607591535556
2004 85.15956605775939
2005 86.77803949340485
2006 88.37838535731566
2007 93.60757929424686
2008 92.31433869802967
2009 95.04123469853437
2010 96.09410977789155
2011 97.2191778888894
2012 97.70074897535827
2013 97.27960072097102
2014 97.01960149162191
2015 100
2016 100.48962702899873
2017 103.39783895444397
2018 107.12440091773587
2019 106.9054229582218
2020 104.29843739590787
2021 115.003385691598
2022 130.5037007328545
2023 126.49850307979473