Year	years
1960	60.699
1961	61.328
1962	61.733
1963	61.976
1964	62.174
1965	62.637
1966	63.055
1967	63.51
1968	63.777
1969	63.993
1970	65.267
1971	65.922
1972	65.828
1973	65.939
1974	65.999
1975	66.237
1976	66.513
1977	66.551
1978	67.566
1979	68.13
1980	68.661
1981	69.212
1982	69.674
1983	70.068
1984	70.649
1985	70.969
1986	71.421
1987	71.457
1988	71.549
1989	69.761
1990	71.927
1991	71.751
1992	72.53
1993	73.052
1994	72.882
1995	72.26
1996	72.261
1997	72.136
1998	72.081
1999	72.618
2000	70.355
2001	70.787
2002	71.117
2003	71.373
2004	67.091
2005	72.118
2006	71.969
2007	72.049
2008	71.729
2009	69.187
2010	73.215
2011	73.38
2012	73.906
2013	74.239
2014	74.651
2015	74.927
2016	75.331
2017	75.403
2018	75.748
2019	76.008
2020	76.393
2021	76.399
2022	76.61