Year	years
1960	58.367
1961	59.243
1962	59.877
1963	60.661
1964	61.257
1965	61.878
1966	62.495
1967	62.798
1968	63.033
1969	63.244
1970	63.656
1971	64.076
1972	64.502
1973	65.144
1974	65.763
1975	66.25
1976	66.463
1977	66.772
1978	66.825
1979	67.057
1980	67.134
1981	67.296
1982	67.444
1983	67.588
1984	67.842
1985	67.957
1986	68.221
1987	68.957
1988	68.918
1989	69.01
1990	69.211
1991	68.821
1992	43.494
1993	43.012
1994	60.361
1995	66.256
1996	70.413
1997	70.753
1998	71.197
1999	72.039
2000	71.484
2001	71.932
2002	72.21
2003	72.806
2004	73.357
2005	72.36
2006	73.174
2007	73.201
2008	73.892
2009	74.067
2010	74.341
2011	74.492
2012	74.406
2013	73.945
2014	73.539
2015	74.18
2016	74.775
2017	74.849
2018	75.034
2019	75.208
2020	74.04
2021	73.108
2022	73.126