Annual base year varies by country
1960 2.9171370676238646
1961 2.90064264611765
1962 2.820940213911939
1963 3.455685390770132
1964 3.5287878895608635
1965 3.424616197624967
1966 3.6845758334428798
1967 3.7191272601622978
1968 3.879927289553516
1969 3.7567276932803186
1970 3.7903491023004077
1971 4.099350283931038
1972 3.756885384054814
1973 4.484066353814253
1974 5.7276604973973395
1975 6.3990679611650485
1976 6.84298362388914
1977 7.613220336116928
1978 8.302849305938297
1979 9.902962452897787
1980 11.37672331729009
1981 13.545315450559814
1982 13.781000138234722
1983 14.35015947667372
1984 15.966922602535059
1985 16.12931358602753
1986 21.040741130645333
1987 26.444692922516253
1988 32.64423439657638
1989 42.44530056243701
1990 52.55686047149337
1991 56.68004999190451
1992 59.843896689044584
1993 62.7666126614846
1994 71.61022944658887
1995 75.4854548627453
1996 83.16314063017244
1997 85.45605008372887
1998 84.84272125608324
1999 91.1568835192621
2000 100
2001 106.55411843600844
2002 106.97407413643596
2003 105.44366000855987
2004 116.332163789945
2005 130.23437966029604
2006 142.08115824186496
2007 157.38196963631802
2008 182.48459205853675
2009 177.4111133867811
2010 189.65117640564836
2011 211.60155114100982
2012 267.13903436338103
2013 352.00962358867133
2014 482.5861292203287
2015 667.004236000145
2016 912.9356450541233
2017 1252.7388575175837
2018 1417.94930994931
2019 1699.1478572880278
2020 2529.2305573947233
2021 3750.5375613297106
