Year	years
1960	59.051
1961	59.229
1962	59.6
1963	59.969
1964	60.072
1965	60.295
1966	60.794
1967	60.864
1968	61.181
1969	61.534
1970	61.94
1971	62.108
1972	62.489
1973	62.889
1974	63.252
1975	63.126
1976	63.169
1977	63.578
1978	63.941
1979	64.301
1980	64.737
1981	64.911
1982	65.037
1983	65.765
1984	66.025
1985	66.673
1986	66.778
1987	67.044
1988	67.366
1989	71.8
1990	72.6
1991	72.7
1992	72.2
1993	71.7
1994	70.7
1995	70.4
1996	71
1997	71.4
1998	71.2
1999	72.6
2000	72.4
2001	72.6
2002	72.1
2003	72.2
2004	72.2
2005	71.9
2006	72.1
2007	72.3
2008	72.6
2009	73.2
2010	73.5
2011	73.7
2012	74.1
2013	74.3
2014	74.5
2015	74.8
2016	75.1
2017	75.4
2018	75.6
2019	75.8
2020	76
2021	76.1
2022	76.3