Maryland Code, Insurance § 11-226

(a)(1)(i) So that the experience of all insurers may be made available at least annually in the form and detail necessary to help the Commissioner in determining whether rating systems comply with the standards set forth in this subtitle, the Commissioner shall adopt reasonable rules and statistical plans that are reasonably adapted to each of the rating systems on file with the Commissioner for the recording and reporting of loss and expense experience.

(ii) The Commissioner periodically may modify the rules and plans adopted under this subsection.

(iii) Each insurer shall use the rules and plans adopted by the Commissioner to record and report its loss and countrywide expense experience.

(i) to the rating systems on file with the Commissioner; and

(ii) to the rules and to the form of the plans used for the rating systems in other states, so that the rules and plans may be as uniform as is practicable among states.

(5)(i) The Commissioner may designate one or more rating organizations or other agencies to help in gathering and compiling experience information.

(ii) Subject to reasonable regulations adopted by the Commissioner, the compilations shall be made available to insurers and rating organizations.