Year	years
1960	34.414
1961	34.892
1962	35.424
1963	36.001
1964	36.606
1965	37.236
1966	37.908
1967	38.619
1968	39.328
1969	40.188
1970	41.008
1971	41.8
1972	42.576
1973	43.469
1974	44.284
1975	45.108
1976	45.979
1977	46.874
1978	47.686
1979	48.544
1980	49.383
1981	50.212
1982	51.041
1983	51.811
1984	52.552
1985	53.286
1986	54.119
1987	54.942
1988	55.784
1989	56.575
1990	57.324
1991	58.019
1992	58.82
1993	59.53
1994	60.047
1995	60.974
1996	61.687
1997	62.36
1998	63.092
1999	63.777
2000	63.577
2001	65.019
2002	65.703
2003	66.335
2004	66.917
2005	67.463
2006	68.099
2007	68.675
2008	69.199
2009	69.561
2010	70.092
2011	70.628
2012	71.091
2013	71.451
2014	71.798
2015	72.072
2016	72.317
2017	72.576
2018	72.914
2019	73.236
2020	73.536
2021	73.773
2022	74.152