Year	years
1960	53.733
1961	55.219
1962	55.53
1963	55.909
1964	56.602
1965	57.366
1966	57.912
1967	58.373
1968	58.763
1969	59.612
1970	60.486
1971	61.425
1972	61.976
1973	62.903
1974	63.716
1975	64.559
1976	65.329
1977	65.778
1978	66.324
1979	67.016
1980	68.042
1981	68.642
1982	68.972
1983	69.436
1984	70.38
1985	71.182
1986	71.947
1987	72.855
1988	73.177
1989	73.724
1990	74.204
1991	74.6
1992	74.888
1993	75.275
1994	75.583
1995	75.741
1996	76.49
1997	77.069
1998	77.222
1999	76.739
2000	76.432
2001	76.634
2002	76.916
2003	77.113
2004	76.996
2005	77.758
2006	79.108
2007	79.407
2008	79.729
2009	80.052
2010	80.358
2011	80.668
2012	81.03
2013	81.365
2014	81.708
2015	82.03
2016	82.588
2017	82.864
2018	83.149
2019	83.433
2020	83.697
2021	83.041
2022	83.929