Year	% of total population
1960	6.04505704523079
1961	5.83206557525942
1962	5.66946118437146
1963	5.56304934296406
1964	5.48992503588708
1965	5.4454211084097
1966	5.45207369531694
1967	5.52916493478218
1968	5.64295089561458
1969	5.77140381935289
1970	5.91036981187591
1971	5.97640679426868
1972	5.94282409030358
1973	5.8722733425864
1974	5.79577665587628
1975	5.72999138532223
1976	5.66008909473955
1977	5.53224836146028
1978	5.51361405483135
1979	5.67339143075864
1980	5.83784528905873
1981	5.99271955103898
1982	6.15413562128396
1983	6.31931616772736
1984	6.48219641849553
1985	6.63909896363127
1986	6.78819457149339
1987	6.90891409578135
1988	6.9834951247027
1989	7.01709492838611
1990	7.04434468103072
1991	7.08745914833423
1992	7.14956432881782
1993	7.22749707354139
1994	7.23537656322999
1995	7.2362346959256
1996	7.30311052283256
1997	6.7919745464286
1998	6.29055933250927
1999	6.35457232377304
2000	6.39770172370722
2001	6.42489724594521
2002	6.44640831700704
2003	6.44858359651641
2004	6.43868523098171
2005	6.42502008546511
2006	6.40924069672649
2007	6.40932017730075
2008	6.42987818481995
2009	6.46709875865099
2010	6.52158621771807
2011	6.58392573566244
2012	6.63316161118048
2013	6.68569183365387
2014	6.76115549841328
2015	6.85207577589682
2016	6.9526457961267
2017	7.06508660698062
2018	7.2113752533923
2019	7.40089582984024
2020	7.63811238510376
2021	7.88903968704946
2022	8.15078627874737
2023	8.49340516440646