Annual base year varies by country
1960 5.043810977262012
1961 5.074526713479284
1962 5.145698210185979
1963 5.095822527910168
1964 5.25586919971285
1965 5.673759924702863
1966 5.814632388586753
1967 5.605409266328055
1968 5.789890842773357
1969 6.165899776727648
1970 6.587110136287712
1971 6.808388334204479
1972 7.810948838984443
1973 9.060501566764072
1974 11.746551828189697
1975 14.603154491651429
1976 15.758475350749334
1977 15.753427948123793
1978 16.45160170083698
1979 17.790984227872528
1980 20.870906841074632
1981 21.071077621634885
1982 23.629079660646056
1983 25.239816211511997
1984 25.99890274983504
1985 28.1347788276946
1986 28.993254709572525
1987 31.121362611149255
1988 33.40194092279399
1989 34.353327231686265
1990 36.64794720131446
1991 38.84430691978799
1992 41.29408993935979
1993 44.28268570863699
1994 44.64936319411566
1995 45.15408609850575
1996 46.4493050042953
1997 47.97751314818533
1998 51.55085598277622
1999 55.02116730274989
2000 52.424237599212645
2001 54.12561181939921
2002 55.89359650408222
2003 60.198956917661015
2004 61.519727204821415
2005 65.60782749286118
2006 68.06599455528278
2007 70.12462089090327
2008 71.63799352937438
2009 72.63425953838188
2010 75.70653255252869
2011 82.81639081935438
2012 85.77833023456154
2013 88.88461794115231
2014 100
2015 102.53089804690228
2016 105.2308715028331
2017 107.01817320639707
2018 108.54395057324963
2019 110.22263604700622
2020 108.58852977498532
2021 105.85963250756242
2022 108.47707725817202
2023 113.25006932454716
