Year	base year varies by country
1960	26.387954548234404
1961	26.47551181992987
1962	26.59957092377587
1963	26.8457017250442
1964	26.99727778435318
1965	27.28960679038882
1966	27.862959796116588
1967	27.96375683433066
1968	28.365678335131484
1969	29.01163023060629
1970	29.460429131214738
1971	30.890304405386495
1972	32.65909028326862
1973	36.97330748848541
1974	43.00571447723426
1975	44.24816125518104
1976	45.00916478920985
1977	45.91235404272523
1978	47.76807577288973
1979	50.2689258658652
1980	55.86240404236712
1981	59.144593643982745
1982	61.825591761730614
1983	63.78635309261072
1984	64.28893849550228
1985	63.34679450908048
1986	62.55317586699035
1987	62.886226453647296
1988	66.3014021590768
1989	69.05899050429728
1990	72.30298361876473
1991	75.50987053989459
1992	76.55772332363593
1993	79.20370123226122
1994	81.94631918143523
1995	84.54916234285862
1996	85.82266111359381
1997	86.75383030808777
1998	85.60100328801155
1999	82.53834510766202
2000	85.7271955144877
2001	84.17173407722206
2002	83.41678463623421
2003	81.91607591535556
2004	85.15956605775939
2005	86.77803949340485
2006	88.37838535731566
2007	93.60757929424686
2008	92.31433869802967
2009	95.04123469853437
2010	96.09410977789155
2011	97.2191778888894
2012	97.70074897535827
2013	97.27960072097102
2014	97.01960149162191
2015	100
2016	100.48962702899873
2017	103.39783895444397
2018	107.12440091773587
2019	106.9054229582218
2020	104.29843739590787
2021	115.003385691598
2022	130.5037007328545
2023	126.49850307979473