Year	% of total population
1960	1.09474604490383
1961	1.08742960555532
1962	1.06995614056148
1963	1.04533511426594
1964	1.01590091794233
1965	0.984709374156937
1966	0.958864216629661
1967	0.940155779160587
1968	0.923798175137079
1969	0.908811553805511
1970	0.895719849204087
1971	0.884865150050112
1972	0.869211322633776
1973	0.852349434077923
1974	0.845604006128096
1975	0.849966827246175
1976	0.866208400549471
1977	0.895007903832365
1978	0.937170730430344
1979	0.993424508744858
1980	1.06414673079128
1981	1.14301545861906
1982	1.2230843020978
1983	1.30327491106502
1984	1.38233764463404
1985	1.45908186585427
1986	1.53191276771856
1987	1.59933350803889
1988	1.65941009079394
1989	1.71599569832141
1990	1.78683030733078
1991	1.8601248736061
1992	1.9185603013651
1993	1.97096017010951
1994	2.02041088408265
1995	2.06788198304819
1996	2.11369055460792
1997	2.15807512198013
1998	2.20088078431876
1999	2.24260099056863
2000	2.28344601939165
2001	2.3253093934199
2002	2.36649517462253
2003	2.40306978515772
2004	2.43536401232702
2005	2.46398652801171
2006	2.48999082095952
2007	2.5147497137905
2008	2.53977048853056
2009	2.56576756588069
2010	2.59284617227742
2011	2.62213421733328
2012	2.65206885403371
2013	2.68399237559497
2014	2.72079793453639
2015	2.76165854312526
2016	2.80605398065516
2017	2.85420540404854
2018	2.90747025450233
2019	2.96591490759928
2020	3.03358380411995
2021	3.10407010969565
2022	3.18727851195428
2023	3.29318285345676