; and (ii) with respect to a subsequent year, for the public disclosure of such information with respect to such subsequent year, including the comparison described in clause (i) of such data with respect to such subsequent year. (H) Reports (i) By Secretary Not later than July 1, 2021, subject to clause (iii), the Secretary shall submit to Congress a report on the data described in subparagraphs (B) and (E) submitted to the Secretary. (ii) By Comptroller General Not later than July 1, 2021, subject to clause (iii), the Comptroller General of the United States shall submit to Congress a report on the data described in subparagraph (B) and subparagraph (E) submitted under this paragraph. Such report shall include an analysis of cost variation to providers and supplier of air ambulance services by geography and provider or supplier status and a recommendation on the adequate amount of reimbursement under this title to providers and suppliers of air ambulance services for furnishing such services that would reflect operational costs of such providers and suppliers and preserve access to critical air medical services and such other recommendations as the Comptroller General deems appropriate. (iii) Limitation The reports submitted under subclauses (i) and (ii) shall not include any information that the Secretary or Comptroller General, respectively, determines is proprietary. (18) Temporary increase in payment for air ambulance services (A) Increase (i) In general Subject to subparagraph (B), in the case of air ambulance services— (I) furnished during 2018, the Secretary shall provide for a percent increase of 12 percent in the base rate of the fee schedule established under this subsection for such air ambulance services