Annual base year varies by country
1960 4.703881460630667
1961 4.713875426118582
1962 4.926800224972718
1963 5.072414869967118
1964 5.238045754429455
1965 5.335428951818075
1966 5.207502417420077
1967 5.660573519562679
1968 5.989446381726789
1969 6.044891087078038
1970 6.849199536685013
1971 7.799886827779261
1972 8.520876325508796
1973 9.238773570622932
1974 9.577484540510456
1975 10.978278513630482
1976 13.337715885841344
1977 15.5536574585097
1978 17.572761217088452
1979 20.072541637867026
1980 23.064235677457724
1981 26.834616032493603
1982 30.077689517071228
1983 32.401339393181225
1984 34.9282522624789
1985 39.690444639591114
1986 46.4173142821654
1987 51.74144902313503
1988 55.83341576557598
1989 58.982169719977364
1990 60.41166334345779
1991 60.94948412050798
1992 62.16937919785668
1993 63.08899864895181
1994 64.29230455105709
1995 65.21207871137746
1996 66.12118082261692
1997 67.15394575160555
1998 67.85941082079434
1999 68.25732124559023
2000 70.22609398754666
2001 72.93746429011226
2002 73.15485902148811
2003 74.66800673817502
2004 76.72788939213982
2005 78.26265315672968
2006 80.38344140923887
2007 84.65681726783386
2008 86.97431894572794
2009 89.27121299463067
2010 92.0918197951734
2011 94.3644014049811
2012 94.1854471674894
2013 98.10452700071127
2014 98.57651714017727
2015 100
2016 102.41043257431994
2017 106.1145488384962
2018 107.97487175654221
2019 111.30650802218895
2020 113.48271905455685
2021 118.67814229142637
2022 125.30879401437014
2023 132.07579937202962
