Year	base year varies by country
1960	22.088900816489986
1961	23.207481613155597
1962	24.125863504360815
1963	24.888836800760526
1964	25.647091863941263
1965	26.630436420811627
1966	27.541305528684347
1967	27.978952125805478
1968	28.563106742549298
1969	29.76532446347392
1970	32.037143338335234
1971	34.47880184490403
1972	36.04133187424351
1973	38.311760519979856
1974	41.099052317851665
1975	43.427980890696034
1976	44.86379441837046
1977	46.25489425822242
1978	47.89501967807575
1979	49.944035987082216
1980	52.66657997714189
1981	54.86553545278349
1982	57.378957745690826
1983	58.990123613421254
1984	60.16352349921642
1985	61.44183335006518
1986	63.2848076318151
1987	64.09464025019766
1988	65.17813532422072
1989	67.05465739698924
1990	69.33226502532138
1991	71.47122070095718
1992	75.26362421346371
1993	78.18661043188335
1994	79.790693208834
1995	81.37160588060979
1996	81.86169038413067
1997	82.08502243694252
1998	82.65014941602837
1999	82.93375112322565
2000	82.52788246352284
2001	83.60486712906753
2002	84.75704739317557
2003	85.87690286844939
2004	86.83494204723658
2005	87.18680359902108
2006	87.53318033927434
2007	89.08275677800368
2008	89.89281338641095
2009	91.54854159912531
2010	92.13928215687984
2011	93.12469680262932
2012	94.51829749551422
2013	96.37028115557762
2014	98.18005707256827
2015	100
2016	101.32775222269545
2017	102.85145713969877
2018	104.9161923675617
2019	107.15123151003891
2020	109.15773009301108
2021	112.45389847134383
2022	118.37833579445314
2023	126.2244614427879