Annual base year varies by country
1961 3.5763711175294333
1962 3.5641164780625822
1963 3.5612410330939626
1964 3.742740040038978
1965 3.8521460859073398
1966 3.8649914605631226
1967 3.933515613549222
1968 4.0197674772306655
1969 4.190247928790937
1970 4.453369404680594
1971 4.414642475159286
1972 4.2655408585616446
1973 4.281880595931811
1974 4.5984399817187755
1975 4.5416817807128
1976 4.89831694017617
1977 5.4512528381074254
1978 5.646764570411119
1979 6.251709852086041
1980 6.254776651657499
1981 6.415266595380666
1982 6.689232576769129
1983 6.8700343938446835
1984 6.682209031309013
1985 8.806333813454483
1986 8.341962141510598
1987 7.831476436026239
1988 8.074683227543886
1989 8.525632637691585
1990 8.804538018998462
1991 10.484821608008343
1992 12.11334778206002
1993 13.73373386852989
1994 14.136280830633066
1995 15.932488838498848
1996 15.970589479828412
1997 16.00359358950252
1998 15.97956468381508
1999 16.334746158142337
2000 17.44550888932581
2001 16.441461350909815
2002 15.846044644425373
2003 17.869264190408895
2004 18.568195881155244
2005 20.401900277092853
2006 22.758799163867216
2007 26.677996262700937
2008 34.764543274524776
2009 43.15893426759233
2010 43.78239628450974
2011 52.56596593499546
2012 70.19732947087437
2013 73.63838803004249
2014 81.72519990431007
2015 90.58138615314301
2016 99.99997123903239
2017 106.67682440189768
2018 119.88586329583364
2019 135.30366104507482
2020 160.0027900130535
2021 194.824619719042
2022 262.36515840092727
2023 348.99995158506886
