Year	years
1960	54.439
1961	55.634
1962	56.671
1963	57.844
1964	58.983
1965	60.019
1966	60.998
1967	61.972
1968	62.946
1969	63.923
1970	64.824
1971	65.618
1972	66.422
1973	67.14
1974	67.769
1975	68.328
1976	68.704
1977	69.121
1978	69.309
1979	69.584
1980	70.478
1981	70.73
1982	71.023
1983	71.296
1984	71.502
1985	71.656
1986	71.95
1987	72.352
1988	72.641
1989	72.88
1990	73.144
1991	73.378
1992	73.715
1993	73.939
1994	74.131
1995	74.362
1996	74.592
1997	73.904
1998	74.99
1999	75.183
2000	75.404
2001	75.639
2002	75.89
2003	76.142
2004	76.376
2005	76.621
2006	76.816
2007	77.549
2008	77.653
2009	77.781
2010	77.936
2011	78.092
2012	78.064
2013	78.123
2014	78.407
2015	78.644
2016	78.86
2017	79.047
2018	79.184
2019	79.282
2020	76.989
2021	76.463
2022	76.833