6. Financial data on determined costs, actual costs and related revenues of designated air navigation service providers shall be reported to national supervisory authorities. For the purpose of enabling the Commission to carry out its tasks under this Regulation, national supervisory authorities shall report those data to the Commission in accordance with the modalities defined in the implementing act referred to in Article 33. Financial data on determined costs, actual costs and related revenues shall be made available to airspace users, and shall be published in accordance with Article 52(3).