Year	years
1960	63.229
1961	63.655
1962	64.113
1963	64.558
1964	64.997
1965	65.416
1966	65.931
1967	66.322
1968	66.688
1969	67.115
1970	67.472
1971	67.881
1972	68.234
1973	68.721
1974	69.091
1975	69.48
1976	69.864
1977	70.202
1978	70.601
1979	70.942
1980	71.392
1981	71.772
1982	72.125
1983	72.446
1984	72.811
1985	73.188
1986	73.567
1987	73.931
1988	74.335
1989	74.732
1990	75.134
1991	75.497
1992	75.79
1993	76.083
1994	76.394
1995	76.684
1996	77.099
1997	77.365
1998	77.378
1999	77.605
2000	78.262
2001	78.275
2002	78.342
2003	78.594
2004	78.782
2005	79.209
2006	79.267
2007	79.513
2008	79.873
2009	80.353
2010	80.019
2011	80.147
2012	80.297
2013	80.613
2014	80.956
2015	81.144
2016	81.409
2017	81.962
2018	82.349
2019	82.344
2020	82.566
2021	82.823
2022	82.753