Year	years
1960	60.897
1961	61.395
1962	61.708
1963	62.359
1964	62.878
1965	62.893
1966	62.778
1967	63.566
1968	64.152
1969	64.545
1970	64.825
1971	65.193
1972	65.351
1973	65.752
1974	66.01
1975	66.577
1976	67.032
1977	67.922
1978	68.686
1979	69.579
1980	69.861
1981	70.077
1982	70.32
1983	70.59
1984	70.819
1985	71.069
1986	71.325
1987	71.564
1988	71.885
1989	72.164
1990	72.473
1991	72.497
1992	72.718
1993	72.952
1994	73.058
1995	73.29
1996	73.092
1997	73.349
1998	73.632
1999	74.066
2000	74.417
2001	75.41
2002	75.793
2003	76.504
2004	76.923
2005	77.182
2006	77.136
2007	77.098
2008	77.185
2009	77.094
2010	76.879
2011	76.872
2012	76.707
2013	76.72
2014	76.749
2015	76.616
2016	76.877
2017	77.155
2018	77.439
2019	77.717
2020	76.612
2021	76.656
2022	78.33