Year	years
1960	45.031
1961	45.694
1962	46.651
1963	47.728
1964	48.577
1965	49.758
1966	50.473
1967	51.643
1968	52.829
1969	53.686
1970	54.975
1971	56.13
1972	57.488
1973	58.571
1974	59.795
1975	60.933
1976	61.983
1977	63.086
1978	64.321
1979	65.32
1980	66.124
1981	66.816
1982	67.658
1983	68.492
1984	69.076
1985	69.883
1986	70.441
1987	71.102
1988	71.665
1989	71.849
1990	72.451
1991	73.004
1992	73.082
1993	73.707
1994	74.052
1995	74.52
1996	74.935
1997	75.537
1998	75.991
1999	76.327
2000	76.41
2001	76.446
2002	76.729
2003	77.009
2004	77.29
2005	77.696
2006	77.861
2007	78.052
2008	78.131
2009	78.326
2010	78.56
2011	78.667
2012	78.663
2013	78.811
2014	78.774
2015	78.856
2016	79.078
2017	79.133
2018	79.323
2019	79.379
2020	79.279
2021	77.145
2022	77.408