Since 2008, the world has experienced an enormous decrease of wealth. By many measures the impact of the crisis was severe. The fall in GDP, the collapse of world trade, the rise in unemployment, and the credit slump reached bigger proportions than in any other crisis since World War II. Although the economic figures seem to improve in some countries, the crisis continues being a challenging issue and is said to be one of the most important problems governments face today.

The crisis has put public finances under ever increasing pressure, and governments have responded...