Year	years
1960	66.249
1961	67.113
1962	67.708
1963	68.373
1964	68.924
1965	69.326
1966	69.8
1967	70.019
1968	70.149
1969	70.586
1970	70.379
1971	70.782
1972	71.098
1973	71.362
1974	71.633
1975	72.011
1976	72.27
1977	72.871
1978	73.251
1979	73.695
1980	74.281
1981	74.363
1982	74.506
1983	74.844
1984	74.96
1985	74.746
1986	74.926
1987	75.035
1988	75.083
1989	75.192
1990	75.15
1991	75.286
1992	75.371
1993	75.813
1994	75.882
1995	75.89
1996	76.138
1997	76.129
1998	76.276
1999	76.481
2000	76.368
2001	76.425
2002	76.481
2003	76.668
2004	76.835
2005	76.942
2006	77.2
2007	77.497
2008	77.576
2009	77.819
2010	77.68
2011	77.869
2012	78.031
2013	78.213
2014	78.436
2015	78.591
2016	78.724
2017	78.841
2018	78.958
2019	79.123
2020	79.21
2021	79.359
2022	79.581