Annual base year varies by country
1960 10.940828645278598
1961 11.210911476328661
1962 11.495584287056172
1963 11.666472541023255
1964 11.899259531867761
1965 11.95314185633024
1966 12.002893547532736
1967 12.16289198257069
1968 12.09692427262324
1969 12.927592926462372
1970 13.191685597033654
1971 13.587674712471753
1972 14.145263894510823
1973 15.232242229675364
1974 17.78534806474643
1975 19.853631888756514
1976 20.60592865770949
1977 22.288187332431768
1978 23.797684221714427
1979 26.10762579330721
1980 27.532068332908455
1981 30.57375431185433
1982 33.54615173041922
1983 36.663278494362004
1984 39.49458919351319
1985 43.00653209172749
1986 45.38740937377306
1987 44.59950467590586
1988 44.0909223494709
1989 45.047795213632654
1990 44.97262288773157
1991 44.557220470769934
1992 44.188524392127164
1993 44.22576195490729
1994 59.280815926827756
1995 63.497464682746696
1996 66.13992268663613
1997 67.4480573730609
1998 69.32245973327466
1999 68.9582064472799
2000 69.86063480750269
2001 74.74734093966589
2002 76.17101266220882
2003 75.4680456710467
2004 75.36621277988613
2005 78.92416030685932
2006 81.20151064013515
2007 86.5516446823608
2008 93.66319755184632
2009 92.08118991388358
2010 93.55855506466536
2011 97.16754861756658
2012 100.34892257513263
2013 101.53919172206787
2014 100
2015 101.06978461964601
2016 102.03565753131866
2017 102.64676625369805
2018 101.78489836261598
2019 103.90792965752892
2020 105.57329719867967
2021 107.10126615492375
2022 116.45341631376722
2023 122.62500473398461