Year	% of total population
1960	3.0164362488861114
1961	3.005777276655935
1962	2.9999893762763246
1963	2.9946883013194254
1964	2.9904676846974874
1965	2.9872398508290963
1966	2.9852318599126306
1967	2.9852646200731945
1968	2.9872338193209975
1969	2.989429580531895
1970	2.990118624608483
1971	2.9884918669434715
1972	2.986093815818984
1973	2.9854915753678135
1974	2.98605553448823
1975	2.98756778666999
1976	2.9925772948736724
1977	2.998434459600872
1978	3.0027410154925067
1979	3.00666711037595
1980	3.0054503853717502
1981	3.0003708117821355
1982	2.996424275448455
1983	2.9890929510094493
1984	2.9808943393924285
1985	2.9759788054880363
1986	2.973045509817402
1987	2.976116092732758
1988	2.9761495239049993
1989	2.9693028571060665
1990	2.963571891400431
1991	2.9583831505413634
1992	2.9483928516000053
1993	2.9341834410860725
1994	2.9179289157155948
1995	2.901706213632092
1996	2.89030650085782
1997	2.882142835898136
1998	2.8743578931788023
1999	2.8674113873190925
2000	2.863040596516886
2001	2.858185322781793
2002	2.851018359923234
2003	2.8426300023784434
2004	2.833925129623875
2005	2.8257548234644836
2006	2.8188705874837123
2007	2.8137373102765797
2008	2.809494035744247
2009	2.8083859366028587
2010	2.810809824946913
2011	2.8154082267196148
2012	2.821160738168119
2013	2.8245223948918734
2014	2.826531328213003
2015	2.833403256348807
2016	2.8456695037224047
2017	2.8612105543005604
2018	2.880912834023423
2019	2.904067587282969
2020	2.917659646298759
2021	2.9159605501886094
2022	2.9128973229274053
2023	2.922638161590644