Year	years
1960	71.23658536585367
1961	70.98536585365855
1962	71.23170731707316
1963	71.28048780487805
1964	71.32926829268293
1965	71.22682926829268
1966	71.12439024390245
1967	71.47317073170733
1968	71.12439024390245
1969	71.47317073170733
1970	71.27317073170732
1971	71.77317073170732
1972	71.82926829268294
1973	71.66829268292685
1974	71.92439024390244
1975	72.21951219512196
1976	72.42195121951221
1977	72.16829268292683
1978	73.01951219512196
1979	73.06829268292685
1980	72.82926829268294
1981	73.62195121951221
1982	73.72439024390243
1983	73.77560975609757
1984	74.37073170731708
1985	73.82926829268293
1986	74.1219512195122
1987	74.17804878048781
1988	74.42439024390244
1989	74.82439024390244
1990	75.37804878048782
1991	76.03170731707318
1992	76.12439024390245
1993	76.43414634146342
1994	76.8829268292683
1995	76.73414634146343
1996	76.7878048780488
1997	77.33414634146342
1998	78.08536585365854
1999	77.89024390243904
2000	78.63658536585366
2001	78.69268292682928
2002	78.84634146341463
2003	79.14634146341464
2004	79.54878048780488
2005	79.85121951219514
2006	80.04878048780489
2007	80.15121951219513
2008	80.35121951219514
2009	80.70243902439024
2010	80.90487804878049
2011	81.15609756097562
2012	81.40731707317073
2013	81.40487804878049
2014	81.4568292682927
2015	81.61243902439026
2016	81.65853658536587
2017	81.85853658536587
2018	81.70731707317074
2019	82.05609756097562
2020	82.25609756097562
2021	82.20731707317074
2022	82.76097560975612