Year	% of total population
1960	85.37578318227587
1961	85.07003704606409
1962	84.75488181583293
1963	84.41974632585256
1964	84.06959183442274
1965	83.70720754665652
1966	83.34608908775247
1967	82.97589878259905
1968	82.59672403563793
1969	82.20703852039681
1970	81.82799849131966
1971	81.416963184331
1972	80.98674776310497
1973	80.55457699542548
1974	80.13279211876434
1975	79.70361007674913
1976	79.26758751167797
1977	78.83860928620274
1978	78.39912108739021
1979	78.00480556968836
1980	77.61827528090384
1981	77.20123022127818
1982	76.79207883558585
1983	76.34445414655251
1984	75.84751737463823
1985	75.30558251840226
1986	74.73753938481697
1987	74.16844183985506
1988	73.60041465168567
1989	73.03974980333206
1990	72.4891314951668
1991	72.05001782840482
1992	71.62061305393307
1993	71.19021710626168
1994	70.763887232987
1995	70.37064710818763
1996	70.0342156365607
1997	69.67945408483882
1998	69.31479490471132
1999	68.95244796008932
2000	68.5904914871801
2001	68.16416897601441
2002	67.72734071999876
2003	67.28834060008465
2004	66.84432302206015
2005	66.38431113439212
2006	65.92684000691148
2007	65.51139376274513
2008	65.00829022594907
2009	64.50037138612636
2010	63.98481980143205
2011	63.46298581275
2012	62.95146830972938
2013	62.438126765794244
2014	61.91093241264555
2015	61.36868080785531
2016	60.839096235472326
2017	60.312803499604605
2018	59.77545467365762
2019	59.240717136286406
2020	58.70558387630153
2021	58.1699471317013
2022	57.63170330629843
2023	57.089763043963046