Annual base year varies by country
1960 1.5296239121821744
1961 1.5707402027887891
1962 1.663368181983104
1963 1.7227491796161751
1964 1.7433312031133967
1965 1.967962809941955
1966 2.267463399888967
1967 2.138951169584474
1968 2.375643788599593
1969 2.531577033932707
1970 2.7100109586817127
1971 2.7959772797437576
1972 3.1455494653755913
1973 3.0386855373951036
1974 3.671512145559536
1975 4.682013143893457
1976 4.707485277772589
1977 4.539671827446376
1978 4.965093867590244
1979 5.460528978155757
1980 5.87605047275547
1981 6.342453541465447
1982 6.935308657344103
1983 7.7875673148822395
1984 8.284254462364927
1985 9.230468152152433
1986 10.558969749595908
1987 11.89962121796795
1988 13.305598377028296
1989 14.803592260377762
1990 16.38992820556277
1991 18.445985401737403
1992 21.856481098184986
1993 24.21149710647672
1994 25.377519466199118
1995 26.97652183265871
1996 29.08690472881526
1997 31.20416756834189
1998 32.48598817682738
1999 35.373033352820876
2000 36.955068823826345
2001 41.02646355899628
2002 42.64079660068646
2003 43.949999096822786
2004 45.78114379194646
2005 48.58267071379439
2006 52.158374361129255
2007 56.12412627053175
2008 59.27822051970146
2009 68.7083955827331
2010 79.11560984844635
2011 100
2012 107.7411500296797
2013 115.372079668498
2014 124.64264875766315
2015 130.13819977064193
2016 139.44351674068506
2017 150.96352093167735
2018 157.5392782418339
2019 164.92969143976282
2020 170.23614317898426
2021 181.74872354010384
2022 196.7269847196001
2023 207.3820038298136
