By 31 December 2011 and every three years thereafter, the Commission shall submit an evaluation report to the European Parliament and to the Council on the statistics compiled pursuant to this Regulation and, in particular, on their relevance and quality.
This report shall also undertake a cost-effectiveness analysis of the system introduced to collect and draw up the statistics and shall indicate best practices to lessen the workload for Member States and enhance the usefulness and quality of the data.