Over the last decade, there has been an increasing attitude, both at the national and international level, to complement policy documents and statements with statistical information (for example, describing past and current tendencies in the economy, the society, etc.) and to set quantitative targets for the policy itself. This attitude has obliged statisticians to face new challenges and develop new concepts and new statistical data sets for meeting policy needs. On the other hand, media and the civil society are also demanding more information to assess current trends and evaluate results of various policies. ...