Year	% of total population
1960	65.3511296769417
1961	65.2616731065153
1962	65.1953884908975
1963	65.1221508834358
1964	65.0140540768539
1965	64.8297268161536
1966	64.5785954454896
1967	64.3238483566753
1968	64.1074127841629
1969	63.9506517458814
1970	63.8403423994516
1971	63.7539413270051
1972	63.6669106705116
1973	63.5639753115196
1974	63.4352482404609
1975	63.2635279959248
1976	63.0785681477558
1977	62.9505280725119
1978	62.8943998816421
1979	62.9165924349083
1980	63.0444706023547
1981	63.2865516211179
1982	63.6285185318698
1983	64.0269438047228
1984	64.4515071380157
1985	64.9056621797563
1986	65.3576540200464
1987	65.773017560875
1988	66.141170959183
1989	66.476674109886
1990	66.7895669443243
1991	67.0619013704119
1992	67.2920920660697
1993	67.4892095998458
1994	67.6907116388281
1995	67.9186668589374
1996	68.1139622515418
1997	68.237249389636
1998	68.3170353239072
1999	68.3486689367517
2000	68.3098889492756
2001	68.1915799519724
2002	68.0128622990621
2003	67.8161302837639
2004	67.6075781839113
2005	67.3512427174376
2006	67.1259595971328
2007	66.9904478590235
2008	66.8191355792438
2009	66.5435182645808
2010	66.1826002922117
2011	65.7735956951944
2012	65.408624302461
2013	65.1161612406536
2014	64.8626432084379
2015	64.6449622967951
2016	64.4227647510052
2017	64.2093554210893
2018	64.0303235020683
2019	63.8484081367699
2020	63.6411991287863
2021	63.4316321162544
2022	63.308722768701
2023	63.2524590531711