Year	years
1960	62.302
1961	62.971
1962	63.543
1963	64.019
1964	64.548
1965	64.919
1966	65.298
1967	65.435
1968	65.735
1969	65.931
1970	65.891
1971	66.153
1972	66.518
1973	66.745
1974	67.183
1975	67.605
1976	67.94
1977	68.366
1978	68.813
1979	69.173
1980	69.404
1981	69.736
1982	69.98
1983	70.115
1984	70.122
1985	70.143
1986	70.093
1987	70.184
1988	70.076
1989	70.12
1990	70.165
1991	70.219
1992	70.278
1993	70.387
1994	70.364
1995	70.526
1996	70.772
1997	70.787
1998	71.006
1999	71.418
2000	71.63
2001	71.881
2002	72.065
2003	72.091
2004	72.433
2005	72.652
2006	72.751
2007	73.002
2008	73.137
2009	73.357
2010	73.567
2011	73.785
2012	73.989
2013	74.163
2014	74.342
2015	74.54
2016	74.737
2017	74.863
2018	75.013
2019	75.23
2020	75.418
2021	75.629
2022	75.677