Year	years
1960	59.227
1961	59.619
1962	59.959
1963	60.388
1964	60.541
1965	60.898
1966	61.198
1967	61.447
1968	61.65
1969	61.798
1970	61.692
1971	61.988
1972	61.831
1973	61.641
1974	61.68
1975	61.704
1976	61.614
1977	62.149
1978	62.185
1979	62.349
1980	62.499
1981	62.555
1982	62.784
1983	62.992
1984	63.112
1985	63.505
1986	63.745
1987	64.335
1988	64.898
1989	65.464
1990	65.909
1991	66.304
1992	67.088
1993	67.542
1994	67.942
1995	68.223
1996	68.614
1997	68.884
1998	69.1
1999	69.298
2000	69.413
2001	69.614
2002	69.781
2003	69.924
2004	70.037
2005	70.24
2006	70.282
2007	70.483
2008	70.564
2009	70.633
2010	70.754
2011	70.788
2012	70.881
2013	70.835
2014	71.151
2015	71.268
2016	71.387
2017	71.516
2018	71.689
2019	71.865
2020	72.119
2021	69.266
2022	72.187