Annual base year varies by country
1960 10.900545829792646
1961 11.225934992637567
1962 11.637457228209255
1963 11.934135622672311
1964 12.278665686662078
1965 12.60405512473724
1966 12.9007334984967
1967 13.532372020815977
1968 14.355415813277745
1969 14.853070078964702
1970 15.465567861377364
1971 16.307752192916077
1972 17.054233833656184
1973 17.743293845882903
1974 18.92043789196063
1975 20.31769867795904
1976 20.92062617869167
1977 21.820231860051003
1978 22.987805980020656
1979 24.327644864865036
1980 26.423535387184682
1981 28.873526584669474
1982 30.81629256470913
1983 32.51980215783791
1984 34.05104648145926
1985 34.9697928615092
1986 36.13588447666606
1987 37.29511260172989
1988 38.6808542914704
1989 39.56827575461849
1990 44.25760653196642
1991 45.63990324221857
1992 46.815760733651416
1993 47.698888939354816
1994 49.214885814564354
1995 50.58019653348617
1996 52.55866761516609
1997 53.25888058572733
1998 56.64622132557546
1999 57.480494277146185
2000 59.37451789622704
2001 62.64303227763337
2002 64.24029068510407
2003 67.07808810663661
2004 66.21131977589471
2005 70.57472688010807
2006 74.45130053470709
2007 77.2674090477514
2008 82.33758658595187
2009 86.44010260523513
2010 88.59600398663915
2011 90.69557543341666
2012 91.76508318888203
2013 92.84976041656742
2014 93.96447272717266
2015 95.82266196153023
2016 97.95144143569023
2017 100
2018 102.04611568543814
2019 104.50833769089604
2020 106.99802253028975
2021 109.99358186634365
2022 113.32977412321188
2023 116.99651299638201
