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This article presents one of the most important issues of the current context, the ageing of the population, with major consequences on the financial stability of the nation. This restructure of the population (that change the shape of the population pyramid), as a result, on the one hand, of the reducing in the fertility rate, on the other hand, increasing in life expectancy and last but not least, due to migration, unbalance national budgets, generating negative effects in economic, financialfatcat:pzjzv4uowbbinlcxq5hss3baz4