Click on the link below to read an excellent article on the issues facing developed economies by an ageing population.
http://www.telegraph.co.uk/finance/economics/12068068/Mapped-how-a-demographic-time-bomb-will-transform-the-global-economy.html
http://www.telegraph.co.uk/finance/economics/12068068/Mapped-how-a-demographic-time-bomb-will-transform-the-global-economy.html