Year	% of total population ages 15+ (national estimate)
1961	63.66510678136202
1971	53.65888022539762
1981	58.29221869210828
1991	58.8794365680168
1994	53.6363368013463
2000	57.86851081195748
2001	58.50851941072468
2005	58.565088326847835
2010	54.661540281320526
2012	52.74968446914904
2018	48.03392016835747
2019	49.67229853169746
2020	50.28371512956524
2021	51.298772330822494
2022	52.253157992228005
2023	55.760317428015206