Annual base year varies by country
1960 16.538828992978885
1961 17.38018464681369
1962 17.960718133052886
1963 18.621361143142845
1964 19.21422584545524
1965 20.236694627945983
1966 20.868558316956054
1967 21.546319542457077
1968 22.157810975420205
1969 22.76351088634535
1970 23.84297877553938
1971 25.322286488661582
1972 27.246762940180965
1973 29.438912671967156
1974 32.236239225362574
1975 34.31798331058179
1976 36.24834222351063
1977 38.132789194048655
1978 40.41809358656449
1979 42.08104397704734
1980 44.42943099162917
1981 47.41360821559822
1982 49.952744158708626
1983 51.687494750437665
1984 54.245908620968144
1985 55.853212617390305
1986 57.50143925472195
1987 58.902719536493706
1988 59.80207891543115
1989 61.575067362658054
1990 63.42212271850295
1991 65.73187495021836
1992 68.01874820398957
1993 69.89408266255909
1994 71.65886814359112
1995 72.9587013895424
1996 73.67822411714708
1997 74.61172392820528
1998 74.94143703631212
1999 75.13354918119038
2000 76.15840153213506
2001 77.6412858765368
2002 78.53074108307999
2003 79.55757181310558
2004 80.94164988622498
2005 82.99578234805763
2006 84.56619623041598
2007 86.4445601727905
2008 88.13569436410462
2009 89.80081046563272
2010 90.58482089747892
2011 92.24561228382657
2012 94.14055456928604
2013 95.66929180371253
2014 97.75077550890346
2015 100
2016 101.84829469843848
2017 102.87241409245786
2018 104.76327536223529
2019 106.44773916428593
2020 109.34258028117196
2021 111.60401456883902
2022 117.51599587921923
2023 126.45540404067972