"Figure 4: UK population by broad age group","" "1911, 2001 and 2011","" "","" "Notes","1. UK population figure for 2001 is based on mid-year population estimates. 2. The 1911 Northern Ireland population is created from aggregating the constituent Counties (Antrim, Armagh, Down, Fermanagh, Londonderry and Tyrone) and the Belfast and Londonderry County Boroughs. " "Unit","per cent" "","" "","0-14","15-64","65 +" "UK 1911","30.8","63.8","5.3" "UK 2001","18.8","65.4","15.9" "UK 2011","17.6","66.0","16.4"