Year	years
1960	60.032
1961	60.342
1962	60.643
1963	60.943
1964	61.315
1965	61.617
1966	61.88
1967	62.229
1968	62.484
1969	62.842
1970	63.146
1971	63.413
1972	63.726
1973	64.068
1974	64.329
1975	64.67
1976	64.978
1977	65.275
1978	65.58
1979	65.911
1980	66.189
1981	66.525
1982	66.834
1983	67.145
1984	67.477
1985	67.765
1986	68.093
1987	68.417
1988	68.784
1989	69.105
1990	69.413
1991	69.747
1992	69.916
1993	70.234
1994	70.527
1995	70.841
1996	71.146
1997	71.433
1998	68.426
1999	64.749
2000	72.383
2001	72.689
2002	73.045
2003	73.311
2004	73.663
2005	73.975
2006	74.15
2007	74.766
2008	75.422
2009	75.24
2010	75.133
2011	75.154
2012	75.651
2013	75.876
2014	76.174
2015	76.282
2016	76.494
2017	76.32
2018	76.353
2019	76.688
2020	73.99
2021	74.151
2022	77.211