Year	years
1960	61.29247438143699
1961	61.653803770866006
1962	62.643921754256276
1963	63.13687862932555
1964	63.886801916729475
1965	64.26644621099493
1966	64.59766946998832
1967	64.95332458615194
1968	65.2033065514657
1969	65.46546161839076
1970	65.76987468018208
1971	65.84572148844546
1972	66.13988235843614
1973	66.34403842248
1974	66.63726148468602
1975	66.95370386786911
1976	67.20128143430411
1977	67.38793890948087
1978	67.59618386347029
1979	67.74269328158185
1980	67.97107457432767
1981	68.198540485263
1982	68.36001172998114
1983	68.60671691400128
1984	68.90188869442524
1985	69.03567823661362
1986	69.31719683173695
1987	69.4116679791286
1988	69.64148301027363
1989	69.78716922982717
1990	69.95035497533543
1991	70.13709946734429
1992	70.41503122899964
1993	70.65959669520423
1994	70.84628861140851
1995	70.84197863963628
1996	70.99560735770078
1997	71.02452926287947
1998	71.20132830715114
1999	71.32853901422781
2000	71.5804362668297
2001	71.78300315898953
2002	71.93226062610373
2003	71.96348163067563
2004	72.30819459380915
2005	72.67845868795195
2006	73.12281069594462
2007	73.5087467186131
2008	73.79346075522831
2009	74.1205733726894
2010	74.3207523149655
2011	74.39197200528987
2012	74.50920622405194
2013	74.59599095349525
2014	74.80360672890173
2015	75.05902452172631
2016	75.4175370081085
2017	75.6575848373518
2018	75.9749610277166
2019	75.51816962583409
2020	75.68568700199377
2021	73.75736069924847
2022	74.30510665014425