Year	% of total population
1960	57.0929867589196
1961	56.989754840164
1962	56.9414290629876
1963	56.9573913790384
1964	57.0175158293792
1965	57.1178629221007
1966	57.2666799794076
1967	57.4343242119999
1968	57.6132260204971
1969	57.8228729247096
1970	58.0804057316334
1971	58.387455802828
1972	58.7291791205493
1973	59.0878866788994
1974	59.4727570417798
1975	59.877313195352
1976	60.2953242790507
1977	60.7160638004467
1978	61.1216620666197
1979	61.5338741201878
1980	61.9474258050153
1981	62.3296504188617
1982	62.6846907176964
1983	63.0270889364876
1984	63.3376175258019
1985	63.5978863407393
1986	63.8094108738806
1987	63.9775245139066
1988	64.10242794206
1989	64.1707693768388
1990	64.1910832063991
1991	64.1791880080922
1992	64.160814412866
1993	64.1635435685228
1994	64.1883312501574
1995	64.2482005016926
1996	64.3517413811005
1997	64.4943487833886
1998	64.6835726053032
1999	64.9258070608989
2000	65.2043374592234
2001	65.5106324709223
2002	65.8469305374929
2003	66.221742624106
2004	66.6392994790755
2005	67.0788802762432
2006	67.5135278240642
2007	67.9093713733565
2008	68.2396379213192
2009	68.5068067164141
2010	68.7279473107819
2011	68.8966704831895
2012	69.0073407150861
2013	69.0531675336464
2014	69.0429153256711
2015	68.9890232434873
2016	68.9407021319734
2017	68.9701983991465
2018	69.029640241007
2019	69.0481289528543
2020	68.9855520229994
2021	68.8619040157343
2022	68.6502157522753
2023	68.3516695967669