"Figure 3: Percentage change in size of usual resident population by age","" "England and Wales national parks, 2001 to 2011, usual residents","" "","" "Notes","1. The 2001 population estimates for New Forest and South Downs were generated using the National Park to 2001 Census Output Areas Best Fit Lookup and were calculated using the breakdown of the population by sex as these areas were not designated as national parks in 2001. " "Unit","Per cent" "","" "National Park"," 0 - 14"," 15 - 29"," 30 - 44"," 45 - 59"," 60 - 74"," 75 and over" "Yorkshire Dales","-16.0","1.4","-21.9","-2.2","30.7","19.9" "The Broads Authority","-11.4","6.7","-13.8","-5.0","41.6","23.8" "South Downs (1)","1.6","5.8","-11.3","9.2","27.8","15.2" "Snowdonia","-16.7","1.8","-17.2","0.1","27.4","16.8" "Pembrokeshire Coast","-16.0","-0.9","-15.4","-4.1","27.0","17.5" "Peak District","-12.5","-0.3","-22.4","-1.5","32.5","16.9" "Northumberland","-12.5","-15.2","-19.0","8.7","59.2","7.1" "North York Moors","-18.4","1.9","-24.6","-8.3","28.8","20.2" "New Forest (1)","-3.3","4.1","-16.0","-7.6","26.8","17.4" "Lake District","-12.6","-10.6","-18.1","-2.3","17.3","17.1" "Exmoor","-21.8","7.4","-36.3","-4.6","13.3","11.1" "Dartmoor","-13.8","2.5","-20.4","1.4","31.2","9.7" "Brecon Beacons","-10.1","9.0","-16.8","-2.0","32.8","12.8"