Annual base year varies by country
1960 7.87538288068397
1961 8.21454611878863
1962 8.759655570153333
1963 9.26539295326531
1964 9.69262311523393
1965 10.413412104674673
1966 11.12492501519418
1967 11.620453733492237
1968 12.274986413229305
1969 13.154108902046236
1970 14.342101803109426
1971 15.409984159665289
1972 16.88951980489916
1973 18.683237611429192
1974 21.161838672337428
1975 23.988173277553994
1976 26.238285157739345
1977 28.567162281092358
1978 31.12527605966934
1979 33.32538018328886
1980 36.261529332598016
1981 40.13932190731474
1982 44.2112699453997
1983 47.47664383633623
1984 50.30596251767479
1985 52.464568210324224
1986 53.679430378302804
1987 56.23172021542059
1988 58.44982485626507
1989 61.35202532850581
1990 62.94867940561537
1991 64.62276978715352
1992 65.69286539662046
1993 66.07383001883892
1994 67.10821738628046
1995 67.96880687729106
1996 69.33782345530646
1997 70.73423145198828
1998 71.60577823395042
1999 72.81215924981085
2000 75.00961149475151
2001 76.89866422144615
2002 78.70397376178502
2003 79.8702327059957
2004 81.54409960397918
2005 83.91411692554522
2006 85.65632467888754
2007 87.73972683407845
2008 91.3674951508409
2009 91.85084953333264
2010 94.81218785764047
2011 95.41769970196783
2012 97.68404528303643
2013 98.55164652995218
2014 99.56880652785675
2015 100
2016 100.25459516653126
2017 101.44227286926129
2018 102.20091584368294
2019 103.27279316661524
2020 106.29489105322764
2021 109.33139988037632
2022 118.1511228721499
2023 114.04198573660706
