Year	years
1960	57.231
1961	57.943
1962	58.699
1963	59.451
1964	60.558
1965	61.343
1966	62.194
1967	63.202
1968	63.984
1969	64.657
1970	65.347
1971	66.005
1972	66.594
1973	66.975
1974	67.454
1975	67.989
1976	68.317
1977	68.879
1978	69.165
1979	69.635
1980	69.851
1981	70.363
1982	70.579
1983	70.798
1984	71.287
1985	71.496
1986	71.711
1987	72.159
1988	72.465
1989	72.862
1990	73.186
1991	73.349
1992	73.357
1993	73.604
1994	73.744
1995	73.594
1996	73.86
1997	73.984
1998	74.044
1999	74.032
2000	74.106
2001	74.391
2002	74.62
2003	74.76
2004	75.078
2005	74.982
2006	75.347
2007	75.839
2008	76.326
2009	76.808
2010	77.388
2011	77.965
2012	78.395
2013	78.623
2014	78.884
2015	79.227
2016	79.584
2017	79.847
2018	80.028
2019	80.064
2020	78.225
2021	78.314
2022	80.626