Annual base year varies by country
1960 11.160993238119744
1961 10.75265595974152
1962 11.171436175737073
1963 11.522884306176195
1964 12.195166729962025
1965 12.536318639750698
1966 13.02937183123074
1967 13.085524148405137
1968 13.741979457887357
1969 14.46934432732526
1970 16.643764538736896
1971 16.508249755560474
1972 17.4638792694592
1973 19.59486955892657
1974 22.92221648733504
1975 22.726163009292804
1976 25.502321568622566
1977 25.801259282113246
1978 27.12486173460319
1979 28.848487386215638
1980 31.133677863357352
1981 33.36970617345382
1982 36.977429553545434
1983 39.498805071544176
1984 41.239711745629364
1985 42.515044689968924
1986 42.47942679498654
1987 42.506205242126285
1988 43.68635870592675
1989 45.44297960006581
1990 46.585140980099304
1991 47.434314304953105
1992 49.20317383470019
1993 52.14196351363991
1994 53.989028607116886
1995 55.24809042689489
1996 57.33843387955619
1997 58.84043920232337
1998 57.644479938478696
1999 60.391020277813126
2000 63.17412415539475
2001 63.67324668380964
2002 64.6056847881087
2003 66.01794992985842
2004 68.07594504096647
2005 71.35538606401639
2006 75.9611444865529
2007 77.39869436401906
2008 82.5147212855659
2009 83.23316698242094
2010 87.10219288326158
2011 90.10674964892728
2012 93.04961565481477
2013 95.16744769918112
2014 97.82899780348433
2015 100
2016 98.8923830735954
2017 101.0115519031108
2018 103.1442482986032
2019 104.073305754166
2020 108.54951404593676
2021 113.59043659007759
2022 120.04640202449805
2023 124.16402310009782