Year	% of total population
1960	35.643237521959726
1961	36.02404336215042
1962	36.421741635647685
1963	36.83041547519885
1964	37.25261390316651
1965	37.66634169475673
1966	38.075314563587774
1967	38.454024258321645
1968	38.850079206256844
1969	39.251204270329374
1970	39.64859013671016
1971	40.07499224305328
1972	40.55064690374232
1973	41.01493400172432
1974	41.55424940342649
1975	42.103728363696085
1976	42.65286466984542
1977	43.16686274504958
1978	43.66920253345436
1979	44.137919839315224
1980	44.57707444363196
1981	44.955739224933346
1982	45.36091041873711
1983	45.672429351024405
1984	45.98423725367978
1985	46.319547642181305
1986	46.67889337327059
1987	47.068242310861855
1988	47.4545663629932
1989	47.84088062082856
1990	48.22812009547136
1991	48.512586734947526
1992	48.67279319657601
1993	48.80935281997771
1994	49.00598466330016
1995	49.19271315358164
1996	49.37471582334818
1997	49.56881486498516
1998	49.744209181484386
1999	49.93568229160243
2000	50.13747860928091
2001	50.335817166351916
2002	50.506953414616824
2003	50.69050697697254
2004	50.91146579588651
2005	51.15259503614755
2006	51.38394923082724
2007	51.61303711441726
2008	51.86867993596462
2009	52.118053021150324
2010	52.28470259585288
2011	52.3707893438369
2012	52.500125046873805
2013	52.69179915662554
2014	52.917621986713236
2015	53.15710953900134
2016	53.3972103268519
2017	53.65453615958849
2018	53.87526605971076
2019	54.07601202008599
2020	54.23303139239001
2021	54.36499359635638
2022	54.60676042051187
2023	54.887956783021664