Year	years
1960	41.264
1961	42.892
1962	43.397
1963	43.903
1964	44.467
1965	45.032
1966	45.615
1967	46.223
1968	46.79
1969	47.308
1970	47.791
1971	48.197
1972	48.7
1973	49.169
1974	49.68
1975	50.266
1976	50.973
1977	51.729
1978	52.483
1979	53.288
1980	54.068
1981	54.832
1982	55.646
1983	56.443
1984	57.173
1985	57.919
1986	58.641
1987	59.289
1988	59.858
1989	60.417
1990	60.962
1991	61.459
1992	61.918
1993	62.341
1994	62.799
1995	63.181
1996	63.692
1997	64.079
1998	64.441
1999	64.777
2000	65.135
2001	65.542
2002	65.932
2003	66.31
2004	66.659
2005	67.077
2006	67.454
2007	67.942
2008	68.413
2009	68.846
2010	69.244
2011	69.601
2012	69.933
2013	70.371
2014	70.788
2015	71.166
2016	71.502
2017	71.783
2018	72.028
2019	72.245
2020	71.757
2021	71.893
2022	72.896