Year	base year varies by country
1960	1.0562411250862762
1961	1.0757072615320642
1962	1.1385470395001869
1963	1.151457931428071
1964	1.2148847878890872
1965	1.2698810512714958
1966	1.3058762271834405
1967	1.3283632076073946
1968	1.3618037460277292
1969	1.4132871627589485
1970	1.4657475489543077
1971	1.515563960059099
1972	1.6055339815962897
1973	1.959291269036353
1974	2.3756041640021976
1975	2.705085040516682
1976	3.162301271326166
1977	3.5541955725704746
1978	4.037114769390544
1979	4.852077987969179
1980	5.796942274961271
1981	6.875850353101115
1982	8.9472120517499
1983	10.742988528402641
1984	13.226006393897672
1985	15.855548103343258
1986	18.635690851915804
1987	21.0872460571703
1988	24.628959570619795
1989	28.345278979752443
1990	34.1156724121591
1991	40.617251691410694
1992	46.462673304911405
1993	52.70532836764652
1994	58.032425094611895
1995	63.45196195707121
1996	67.92580118592512
1997	72.08983103303679
1998	75.81767556773778
1999	78.27431218107886
2000	80.47386024987723
2001	83.06537572112663
2002	85.39274634481954
2003	87.9209025538204
2004	90.52157288444077
2005	92.71147785705645
2006	95.97615083356476
2007	99.0459482898051
2008	103.69998881550404
2009	106.1411741040123
2010	105.26660345225653
2011	106.87336215860202
2012	107.17627149757551
2013	104.46401661800041
2014	101.85538956164353
2015	100
2016	98.99583760796095
2017	99.60396910368404
2018	100.32244725659434
2019	100.77737270066392
2020	99.7756521184418
2021	102.46424007383565
2022	111.97738464799794
2023	112.57105517145096