Year	base year varies by country
1960	0.09109085569919226
1961	0.09500184491256974
1962	0.09856447171355347
1963	0.10129961945685437
1964	0.10080794874556014
1965	0.09900631736568336
1966	0.1009085743146664
1967	0.10581717722644855
1968	0.11316657897231662
1969	0.11476882947420552
1970	0.11825334941891932
1971	0.12078588553380587
1972	0.1327263837056077
1973	0.14104757762245548
1974	0.19390114363905558
1975	0.22232346039004644
1976	0.20948082629020223
1977	0.21299919337074796
1978	0.24449705772028588
1979	0.2605432530884071
1980	0.2912321041875211
1981	0.3038737313065019
1982	0.3169476085519772
1983	0.3452183356152006
1984	0.41178247962262743
1985	0.4715325246609264
1986	0.5294997281213978
1987	0.8403733663104351
1988	1.0390883694724
1989	2.728085051461006
1990	4.2679420073502135
1991	10.009930636757744
1992	11.14112723984405
1993	13.029647329494972
1994	15.188972248577956
1995	17.065069862703695
1996	17.735826043641715
1997	17.991799010343534
1998	18.52617214008794
1999	20.60304995550023
2000	21.959975834392928
2001	22.030680712059286
2002	22.607609509616854
2003	23.674364650261285
2004	25.278359162168297
2005	27.20771195719775
2006	74.7824925985229
2007	80.92289083230338
2008	88.6548696000069
2009	89.67716127490948
2010	93.2393644831891
2011	95.48579898086878
2012	100
2013	99.46331947189428
2014	97.36921487792169
2015	100.29448746697656
2016	101.19530840902856
2017	103.32952543144512
2018	100.3458978612453
2019	103.3173290118792
2020	76.14890181374456
2021	93.26048817823701
2022	104.44083464616773
2023	89.54850537208426