Annual base year varies by country
1960 0.8596461656478651
1961 0.9705208708631428
1962 1.1329120390868588
1963 1.4725637377274523
1964 1.9189809710349837
1965 2.0097902943131682
1966 2.3011455003442762
1967 2.599355701723142
1968 2.9601846508944027
1969 3.377317164378439
1970 3.8786342259027746
1971 4.313335332338849
1972 4.993996952839219
1973 5.629291503459682
1974 7.351594054369246
1975 9.092618176612527
1976 11.023611251809937
1977 12.616952650745942
1978 15.37195617912367
1979 18.221105290268596
1980 22.712789283592688
1981 26.479883311048987
1982 28.190032467947866
1983 29.54887253942412
1984 30.855316908583163
1985 32.085035645711265
1986 33.678757154452455
1987 35.305814221334614
1988 37.82075626642737
1989 40.11463273008807
1990 44.16118256269626
1991 48.197970955725964
1992 51.94679184471035
1993 55.19581579685193
1994 59.69921958515278
1995 63.89282807285957
1996 66.51925443280192
1997 69.18221027492817
1998 72.27875285837374
1999 71.38984317609743
2000 72.1192796111431
2001 74.62794813735519
2002 76.89151801951513
2003 79.54427036455009
2004 82.03231991729939
2005 82.88660572055242
2006 82.7016064532816
2007 84.70232036245243
2008 87.09626399192949
2009 90.23925820620317
2010 92.70955504556932
2011 93.89796527632804
2012 95.07338767677496
2013 96.04175177721055
2014 96.91275130331258
2015 100
2016 101.9860385054535
2017 104.2529651811111
2018 104.7564538163076
2019 103.87720638750721
2020 105.50158293727512
2021 108.41651987098206
2022 109.79939705598144
2023 112.06573782063445
