Year	years
1960	42.237
1961	42.661
1962	43.098
1963	43.505
1964	43.973
1965	44.309
1966	44.677
1967	45.178
1968	45.61
1969	46.137
1970	46.711
1971	47.034
1972	47.59
1973	48.064
1974	48.404
1975	48.66
1976	48.735
1977	48.759
1978	48.745
1979	48.754
1980	48.695
1981	48.58
1982	48.47
1983	48.387
1984	48.361
1985	48.438
1986	48.609
1987	48.924
1988	49.298
1989	49.839
1990	50.387
1991	51.039
1992	51.712
1993	52.535
1994	53.002
1995	53.406
1996	53.876
1997	54.808
1998	55.61
1999	56.29
2000	56.984
2001	57.711
2002	57.946
2003	58.462
2004	58.818
2005	59.3
2006	59.96
2007	60.184
2008	60.641
2009	61.119
2010	61.209
2011	61.642
2012	61.695
2013	61.811
2014	62.25
2015	62.416
2016	62.952
2017	63.038
2018	63.2
2019	63.662
2020	62.891
2021	62.234
2022	62.97