Annual base year varies by country
1960 9.300845833186372
1961 8.654731885857267
1962 8.716654470369605
1963 8.99340096274481
1964 9.124690112559247
1965 8.912625700466846
1966 9.424010647970816
1967 9.58875077697451
1968 9.594594681986592
1969 10.058834998002748
1970 9.89575609447224
1971 11.12216058580243
1972 11.08074692185784
1973 11.428058991017927
1974 16.231509969302245
1975 15.53942512498521
1976 17.7475796265722
1977 21.41376914919581
1978 18.778979048275378
1979 20.19622836072301
1980 22.309910400306183
1981 25.13153897781923
1982 26.912550301017387
1983 30.75031326881389
1984 31.32824858609523
1985 32.39385933488386
1986 34.206230956555856
1987 34.77365817259049
1988 35.67282723733867
1989 36.02682815917758
1990 37.09896654964726
1991 38.08991438389967
1992 39.32609764686777
1993 36.1026264953968
1994 49.04266756379813
1995 54.4786600029025
1996 57.41393087436924
1997 58.5828983385637
1998 64.18145062303961
1999 64.89715543775122
2000 71.41896699792599
2001 72.58599111072324
2002 76.23550990456653
2003 74.02993503907314
2004 72.61752607579098
2005 76.88464647067505
2006 76.49348565990525
2007 80.29046330837848
2008 87.57617965677218
2009 90.30613056361614
2010 90.22184244143966
2011 92.76573305430267
2012 94.38949751866652
2013 95.97833318017608
2014 96.43890995124968
2015 98.5631806922436
2016 100
2017 99.11504846642238
2018 99.56529068842919
2019 99.57718231269087
2020 101.50212238619292
2021 104.00553770796144
2022 108.32781352157738
2023 111.13844938019675
