Year	years
1960	55.669
1961	56.193
1962	56.775
1963	57.354
1964	58.021
1965	58.706
1966	59.507
1967	60.377
1968	61.171
1969	61.935
1970	62.654
1971	63.294
1972	63.994
1973	64.638
1974	65.27
1975	65.892
1976	66.501
1977	67.063
1978	67.687
1979	68.267
1980	68.844
1981	69.426
1982	70.012
1983	70.609
1984	71.2
1985	71.774
1986	72.347
1987	72.725
1988	73.188
1989	73.53
1990	73.824
1991	74.016
1992	74.639
1993	76.301
1994	74.901
1995	64.24
1996	64.247
1997	64.241
1998	64.112
1999	63.9
2000	63.813
2001	63.756
2002	63.765
2003	73.098
2004	72.92
2005	72.71
2006	72.455
2007	72.236
2008	72.252
2009	72.996
2010	73.535
2011	74.058
2012	74.634
2013	75.294
2014	75.859
2015	75.515
2016	75.514
2017	75.624
2018	75.632
2019	75.7
2020	75.725
2021	75.743
2022	76.146