Year	base year varies by country
1970	20.20090895319318
1971	21.280652430048317
1972	22.26836551997504
1973	23.610914493682163
1974	25.941680595270267
1975	28.048356188363034
1976	29.759596627457334
1977	31.857387303420122
1978	34.26637430054906
1979	37.31761410388989
1980	40.97436070857813
1981	44.911107903583684
1982	47.1300580834742
1983	48.86872579834473
1984	51.00520593304405
1985	52.447114923987655
1986	53.471763461799156
1987	55.00262691739156
1988	56.89302151255418
1989	59.14944013955521
1990	61.403387439671995
1991	63.20759299144167
1992	64.7253610635698
1993	66.23404926818901
1994	67.73265477986693
1995	69.20122260685334
1996	70.49194432881202
1997	71.62895531839679
1998	72.18429685103673
1999	73.3368270320812
2000	75.24931720393774
2001	76.59216362083271
2002	77.65791361194503
2003	79.3321650894511
2004	81.65468164714288
2005	84.53477861130861
2006	87.23928235597785
2007	89.56910499608561
2008	92.08751029587286
2009	91.53144536452426
2010	92.95005760668539
2011	95.1955804274875
2012	96.85681511795956
2013	98.22399557822204
2014	99.75728392319198
2015	100
2016	100.66009176685577
2017	102.42464658572061
2018	104.69251109640874
2019	106.20854729179379
2020	107.56244020603293
2021	112.1380467184353
2022	119.7133189504126