Year	years
1960	69.10926829268294
1961	69.48048780487805
1962	69.51902439024391
1963	69.68121951219513
1964	70.39975609756098
1965	70.80926829268293
1966	71.05512195121952
1967	71.25292682926829
1968	71.53780487804879
1969	71.05756097560976
1970	72.02731707317074
1971	71.63024390243903
1972	72.8180487804878
1973	72.61073170731709
1974	72.96975609756099
1975	73.31878048780487
1976	73.6426829268293
1977	74.1319512195122
1978	74.29560975609756
1979	74.81878048780487
1980	75.34926829268294
1981	75.52853658536587
1982	76.13414634146342
1983	75.9090243902439
1984	76.29536585365855
1985	76.25951219512196
1986	76.51048780487805
1987	76.72804878048782
1988	76.74707317073171
1989	76.81365853658538
1990	76.83756097560976
1991	76.97121951219513
1992	77.41
1993	77.54658536585367
1994	77.90146341463415
1995	77.98073170731708
1996	78.12048780487805
1997	78.60414634146342
1998	78.66585365853659
1999	78.71707317073172
2000	78.96585365853659
2001	79.36829268292684
2002	79.56829268292684
2003	79.61951219512197
2004	79.87073170731709
2005	80.17073170731709
2006	80.8219512195122
2007	80.87317073170732
2008	81.17560975609757
2009	81.47560975609755
2010	81.6268292682927
2011	82.47560975609757
2012	82.4268292682927
2013	83.07804878048782
2014	83.22926829268293
2015	82.83170731707318
2016	83.32926829268293
2017	83.28292682926829
2018	83.43170731707319
2019	83.83170731707318
2020	82.33170731707318
2021	83.22926829268293
2022	83.08292682926832