UN Figures for Norway ageing population
Active Ageing: Country Report Norway http://www.ub.uib.no/elpub/rokkan/N/N16-03.pdf Pages 13-23 ageing policies.
Norway, Ageing and employment policies, OECD (2013). Explains in detail the way an older work force is being supported by policies to encourage more people to retire later. Rapport_Ageing_and_Employment_Policies_Norway_Working_better_with_age
Why is Fertility in Norway so High? Article by Professor Øystein Kravdal, Department of Economics, University of Oslo, Norway. Essential reading for Norway part of your case study.