Year	% of total population
1960	61.2498963716252
1961	60.6134853058628
1962	59.9851482522675
1963	59.3693178866435
1964	58.7629259358187
1965	58.1658463647125
1966	57.5825303191294
1967	57.0076665069478
1968	56.4388683771136
1969	55.8878591074029
1970	55.3941109852775
1971	54.9737583558919
1972	54.5763077088833
1973	54.1840168243954
1974	53.805135160127
1975	53.4369408311385
1976	53.0751058175017
1977	52.7209768895405
1978	52.3819884589916
1979	52.0308006308563
1980	51.8651506084181
1981	51.955909239452
1982	52.1030390140203
1983	52.2411751366877
1984	52.360011486237
1985	52.4644074593944
1986	52.5623323029609
1987	52.6527917456759
1988	52.7265759436124
1989	52.7744016971251
1990	52.7060746548245
1991	52.5064125793135
1992	52.2766164011371
1993	52.0499378182093
1994	51.8259234458175
1995	51.6009967087292
1996	51.3788823139215
1997	51.174107432126
1998	50.9794892457645
1999	50.7875879920452
2000	50.6848203361051
2001	50.6915380996013
2002	50.7175679582685
2003	50.739051932552
2004	50.7566888612473
2005	50.7723651401812
2006	50.7842720510096
2007	50.7856739680632
2008	50.7803915616937
2009	50.7710535909588
2010	50.7510384766987
2011	50.7247251718996
2012	50.6935429587961
2013	50.6638571958768
2014	50.6335686957975
2015	50.5994832656657
2016	50.5660960165374
2017	50.5349750305446
2018	50.5021401723995
2019	50.4684979599583
2020	50.4145221620152
2021	50.358872717464
2022	50.3254275967259
2023	50.2983486747768