Year	% of total population
1960	5.489078062096
1961	5.42655399407092
1962	5.3807995921743
1963	5.33789228044356
1964	5.28834473868177
1965	5.22226462578908
1966	5.13708363184516
1967	5.04037037340983
1968	4.94430227015534
1969	4.86041015152233
1970	4.79709265287037
1971	4.75692230183797
1972	4.73791749374738
1973	4.73701678260889
1974	4.74830024852526
1975	4.76610133420273
1976	4.78495039726411
1977	4.80307554251756
1978	4.81889843817142
1979	4.83165285625716
1980	4.85373607308684
1981	4.88830243800228
1982	4.93224831553815
1983	4.99136795069547
1984	5.0689787467005
1985	5.16272690728232
1986	5.2673918845771
1987	5.37995463412645
1988	5.49704207928947
1989	5.61533541030562
1990	5.73798912343321
1991	5.87211430123696
1992	6.02428036839472
1993	6.19468141783413
1994	6.38168171600564
1995	6.58364907178376
1996	6.79925082481718
1997	7.02823446032064
1998	7.27171219508347
1999	7.53402155685636
2000	7.82196406339934
2001	8.14537425656676
2002	8.50810503814409
2003	8.89981574469502
2004	9.30844398877106
2005	9.71988377100567
2006	10.1206071678408
2007	10.5166068089151
2008	10.9019446154388
2009	11.2652729879444
2010	11.6145245442652
2011	11.9630262692482
2012	12.3209619828276
2013	12.6938075118444
2014	13.0981497880449
2015	13.5334306684815
2016	13.971336274146
2017	14.4011419224097
2018	14.8503326192826
2019	15.3505526581018
2020	15.822112678783
2021	16.2342409561742
2022	16.6551913031639
2023	17.1145256791055