Annual base year varies by country
1960 7.298689765911141
1961 7.636985388575878
1962 8.010338272603596
1963 8.384779588749055
1964 9.017157237951862
1965 9.471544298078996
1966 9.895434838051518
1967 9.818802885704748
1968 11.406739067755886
1969 10.967273033216292
1970 11.459800071473516
1971 12.025715744426234
1972 12.584218495265183
1973 12.861007155669322
1974 13.553057912755692
1975 16.172351188637546
1976 20.376616993004482
1977 22.693940184635554
1978 24.788226331384898
1979 27.49674509203529
1980 32.519129842869255
1981 37.030426144108766
1982 44.77505613722027
1983 49.7463774972253
1984 50.45247810919966
1985 67.67956522875134
1986 65.35880774120638
1987 63.853364870052566
1988 65.52891288391363
1989 67.13843718766097
1990 68.37153200827595
1991 68.10500910539295
1992 70.00013111339624
1993 67.59701238988275
1994 84.09918014261639
1995 92.42329669016213
1996 89.14869702052603
1997 89.88273045411773
1998 89.51047744526005
1999 93.16672578242333
2000 101.09204748249023
2001 101.52263761007691
2002 99.11464074141011
2003 100.43922726673127
2004 95.97994057794175
2005 100
2006 103.33404593869069
2007 105.23356507679871
2008 112.68101890226436
2009 113.48288902376396
2010 118.26200449558529
2011 123.00326432464668
2012 130.6061405913532
2013 133.85495106929767
2014 149.77539565903683
2015 153.83170744431112
2016 158.41606782421715
2017 168.6239339474842
2018 166.55977943876778
2019 170.43701969728423
2020 173.8153550750193
2021 179.3527063749787
2022 190.05634039024199
2023 196.51816661816017
