Year	years
1960	60.031
1961	60.314
1962	60.73
1963	61.107
1964	61.452
1965	61.913
1966	61.831
1967	62.092
1968	62.614
1969	62.674
1970	63.107
1971	63.487
1972	63.902
1973	64.018
1974	64.356
1975	64.289
1976	64.613
1977	64.578
1978	64.688
1979	64.784
1980	64.882
1981	65.033
1982	65.15
1983	65.579
1984	65.343
1985	65.377
1986	65.507
1987	66.082
1988	66.282
1989	66.013
1990	66.053
1991	66.004
1992	65.966
1993	65.921
1994	66.071
1995	66.511
1996	66.564
1997	67.08
1998	67.599
1999	68.172
2000	68.794
2001	69.356
2002	69.884
2003	70.336
2004	70.771
2005	70.947
2006	71.557
2007	72.025
2008	71.989
2009	72.777
2010	72.821
2011	73.344
2012	73.833
2013	74.277
2014	74.384
2015	74.788
2016	75.587
2017	75.467
2018	75.708
2019	75.832
2020	70.998
2021	73.287
2022	76.249