Every rating organization operating under Article XXIX of the Illinois Insurance Code, every insurance company which makes its own rates under that Article, every service agency administering self-insurance for liabilities incurred under this Act, or under the Occupational Diseases Act, and every employer providing for such liabilities by self-insurance without the assistance of a service agency shall report annually to the Commission, in accordance with such reasonable rules therefor as the Commission may adopt, detailed information as to the number of injuries and the benefit amounts paid by category of losses as set out in Sections 7 and 8.