Year	% of total population
1960	70.991
1961	70.951
1962	70.911
1963	70.871
1964	70.831
1965	70.791
1966	70.751
1967	70.711
1968	70.67099999999999
1969	70.631
1970	70.575
1971	70.467
1972	70.35900000000001
1973	70.25
1974	70.142
1975	70.033
1976	69.924
1977	69.814
1978	69.705
1979	69.595
1980	69.512
1981	69.604
1982	69.695
1983	69.785
1984	69.876
1985	69.967
1986	70.057
1987	70.14699999999999
1988	70.237
1989	70.327
1990	70.417
1991	70.507
1992	70.596
1993	70.685
1994	70.774
1995	70.863
1996	70.952
1997	71.041
1998	71.129
1999	71.218
2000	71.306
2001	71.394
2002	71.482
2003	71.693
2004	71.936
2005	72.178
2006	72.418
2007	72.657
2008	72.895
2009	73.131
2010	73.366
2011	73.6
2012	73.6
2013	73.6
2014	73.586
2015	73.559
2016	73.518
2017	73.462
2018	73.394
2019	73.311
2020	73.214
2021	73.10300000000001
2022	72.97800000000001
2023	72.838