Annual base year varies by country
1960 13.34107989648507
1961 15.376127389047983
1962 15.358450236752386
1963 14.955811469533026
1964 14.901665676546411
1965 15.031277503997826
1966 14.796478303059438
1967 14.916847251043652
1968 15.120249762550774
1969 14.54680994817351
1970 14.166473353832659
1971 14.260813198488778
1972 14.271392670636967
1973 14.301143532126343
1974 14.340862909056549
1975 14.178642631019112
1976 14.163572686602718
1977 14.318489847075488
1978 14.558344955629702
1979 15.082453347862456
1980 15.64831337214997
1981 16.01728048104672
1982 15.994799412674837
1983 16.17982649447793
1984 16.97978344300555
1985 18.713317291531787
1986 19.587045967743748
1987 20.582560804581394
1988 23.074627594616928
1989 25.05961438817983
1990 26.490825141696668
1991 28.269561386442867
1992 30.584929780791136
1993 35.2295157774597
1994 42.49278110379136
1995 48.29971556143573
1996 51.44244795069615
1997 52.2740504844179
1998 51.80345249341688
1999 51.149144356114896
2000 52.20424512774587
2001 53.27289184431382
2002 53.593647435065606
2003 54.98878532390592
2004 58.811601654920246
2005 61.10745618407826
2006 63.50687063605043
2007 68.42845401188417
2008 73.76268878986757
2009 73.60813134874894
2010 78.67338676423473
2011 85.02680123884909
2012 87.00896097347986
2013 88.89128675568367
2014 89.80781253504323
2015 89.80516850893761
2016 91.06903798027663
2017 94.92370073587733
2018 98.24579070807353
2019 99.50991969762538
2020 100
2021 104.55232657897571
2022 106.41931919158665
2023 105.84936954820638