Annual base year varies by country
1960 15.473644425781155
1961 16.28818607109086
1962 16.41176675981314
1963 17.183032868515458
1964 18.67417452824738
1965 19.3038303867583
1966 20.458834252206103
1967 21.319663983183474
1968 22.214378314726506
1969 23.638313696824216
1970 24.97267186618405
1971 27.167777380223846
1972 29.385108141498918
1973 31.877259436590833
1974 35.988040343764204
1975 38.90141182483377
1976 42.39990729168003
1977 44.66603513768514
1978 47.048918465704396
1979 49.293650722847495
1980 52.362363595373054
1981 55.7083670181609
1982 58.28412964611922
1983 59.09373863012092
1984 60.45709525409778
1985 60.98058315188628
1986 61.10967927080999
1987 60.469473187911746
1988 60.96510399569578
1989 61.78695536092804
1990 62.7506782061062
1991 64.7066479329925
1992 66.32155812423126
1993 67.38105073710616
1994 68.77094226765075
1995 70.19080330062036
1996 70.920952186834
1997 72.79524536424626
1998 74.30992054919253
1999 75.26359177384099
2000 77.83788495313765
2001 81.09528749544194
2002 84.15301882500565
2003 85.97937438623316
2004 87.0146009594895
2005 88.74509509539004
2006 91.01795139151915
2007 92.90403059553581
2008 95.04669994223927
2009 95.25646953987477
2010 96.15227445986633
2011 96.33847534588696
2012 97.73163525419079
2013 98.98258753336233
2014 99.23319732216595
2015 100
2016 100.45466728877331
2017 101.72110646991415
2018 104.20014214161282
2019 107.36025506416087
2020 109.4307749000305
2021 112.63109309723856
2022 118.86547632484809
2023 128.0839015040661
