The birth rate in the most developed countries is foretold to begin to decline over the next half of the century. It's estimated that by the end of 2030, more than one-third of the population in most advanced countries will be aged 65 and over.

The drop of birth rate leads to a substantial number of obstacles. An aged population means a lack of the labour force which yields economic crisis. a tiny number of people will be working and paying income tax, as a result, the government might increase the income tax rate to can cover aged people needs which are represented in funds for their pension plan, medical care and social services in order to support old people.

To handle these circumstances there are some solutions that government needs to conduct to prevent this crisis. They can increase the official retirement age to 70 or maybe even older in order to achieve that, the health care is a crucial key point. Healthy old people can work for a much longer term.

Besides They could provide additional facilities for their residents to have children at an earlier age by giving subsidies and tax exemptions for families that have young children. On the other hand, these countries could also accept young and productive immigrants from other countries who are qualified and well educated, in order to develop the economy and offset the lack of labour force.