Annual base year varies by country
1960 2.2717084382380865
1961 2.2846546616405314
1962 2.406760404148712
1963 2.5666015599141585
1964 2.659549724493297
1965 2.792600427703091
1966 3.016828958683385
1967 3.2019169014213054
1968 3.3774932623884597
1969 3.397968807871901
1970 3.4007551558104727
1971 4.0946350136992296
1972 4.1482398705294115
1973 5.082432311078495
1974 7.19059861131775
1975 6.728460655943931
1976 7.108130454240889
1977 7.669173302258627
1978 7.3272108392911335
1979 9.276623796882665
1980 12.35666392367776
1981 13.581205615242025
1982 12.261119658773566
1983 12.36352705259863
1984 11.559394702750817
1985 11.414604823743542
1986 10.51993026630491
1987 12.719221600559985
1988 10.45834605595694
1989 10.568980538256039
1990 11.065988317137968
1991 10.498598145968224
1992 11.46416584847306
1993 11.651506652865496
1994 12.208137076813703
1995 13.3785167287606
1996 14.938711383816328
1997 16.493907281908513
1998 15.4007999178597
1999 20.017707141160464
2000 22.681435866105243
2001 24.311068603385646
2002 30.935179073680956
2003 35.378264360450004
2004 43.3756421879722
2005 55.76741426025694
2006 66.74216982376396
2007 68.37026908285154
2008 84.58043017267495
2009 63.56450422578668
2010 75.81881599496931
2011 94.27520336641768
2012 99.9146805140392
2013 100
2014 98.99339598334758
2015 92.02356075359403
2016 96.34159547086409
2017 98.08216422156488
2018 101.61074255493881
2019 104.07938901760086
2020 225.99055118314672
2021 210.83759623277552
2022 259.66750389283465
2023 238.35499733014004
