Year	years
1960	60.954
1961	61.505
1962	61.785
1963	62.286
1964	62.769
1965	63.529
1966	64.161
1967	64.509
1968	65.142
1969	65.303
1970	66.549
1971	67.162
1972	67.741
1973	68.251
1974	68.839
1975	69.426
1976	69.786
1977	70.464
1978	70.908
1979	71.059
1980	71.258
1981	71.932
1982	72.224
1983	72.672
1984	72.756
1985	72.886
1986	73.296
1987	73.336
1988	73.638
1989	73.912
1990	73.857
1991	74.393
1992	74.347
1993	74.671
1994	74.729
1995	74.929
1996	74.832
1997	75.533
1998	75.775
1999	75.376
2000	76.145
2001	75.226
2002	76.378
2003	75.88
2004	76.319
2005	76.674
2006	76.886
2007	77.287
2008	76.91
2009	76.959
2010	77.139
2011	77.1
2012	77.416
2013	77.323
2014	77.075
2015	77.218
2016	76.742
2017	76.228
2018	76.431
2019	76.566
2020	75.814
2021	75.207
2022	75.655