Year % of total population ages 15+ (national estimate) 1983 53.45932827489336 1986 52.63384301351805 1991 52.17451857704307 2004 52.85600553584617 2011 57.071256917911796 2013 56.46710469591341 2015 61.91042107956572 2016 62.63392875705231 2019 57.94999796484313