(7)The annual fees charged by ESMA should cover all activities related to the DRSPs. ESMA should assess annually its supervisory budget related to each type DRSP and charge each individual DRSP a fee that is proportionate to its revenue compared to the total revenue of all DRSPs of the same type. Revenue related to activities directly ancillary to core DRSP services should be included in the calculation of the applicable turnover for as far as it is likely to have an impact on ESMAs supervision of the DRSP and it is not already covered by separate supervision activities. A minimum fee for Approved Publication Arrangements (APAs) and Approved Reporting Mechanisms (ARMs) covers the fixed costs related to requests for information, on-going monitoring and, investigations. The annual fee applies per calendar year.