Year	base year varies by country
1960	11.130110282836807
1961	11.40217771260256
1962	11.55153194414082
1963	11.803612526749124
1964	12.137869517191394
1965	12.596077990066302
1966	13.215918972658445
1967	13.804574350684945
1968	14.365748786357926
1969	15.059152262255868
1970	15.770247514761623
1971	16.54794780500112
1972	17.512038543220584
1973	19.250774983543582
1974	22.248020555023373
1975	24.694798794482534
1976	26.86384827625099
1977	28.66843670735289
1978	30.625514663739978
1979	33.70951948731478
1980	37.09931159916165
1981	41.13236193813307
1982	44.763147774588795
1983	47.37036614812957
1984	49.04983049706958
1985	50.68730473605542
1986	52.27502324602179
1987	54.779833998874075
1988	57.26683746342401
1989	59.947643147643106
1990	61.95726902293388
1991	63.851160170857256
1992	64.79031549258131
1993	65.62549044278926
1994	66.58075539983552
1995	68.08769476909843
1996	69.22835091118837
1997	70.02041207022734
1998	69.89701841961549
1999	71.2417361518867
2000	74.35799148416346
2001	75.52814592040299
2002	76.47793007066251
2003	78.96326166633824
2004	81.53815405525415
2005	84.07940356070594
2006	86.24038941604103
2007	89.08679283248048
2008	92.64698299405596
2009	90.49301283712622
2010	93.07083097670736
2011	96.09047236921396
2012	97.26128068319527
2013	98.95434466365016
2014	100.87524539043959
2015	100
2016	100.71697814066066
2017	103.30642640797765
2018	105.0121376142956
2019	106.63569956250024
2020	107.77756558284905
2021	116.03857094045485
2022	124.91995420582553
2023	126.92522153948988