The purposes of this subchapter and Subchapters B, C, D, and E are to:
(1) promote the public welfare by regulating insurance rates to prohibit excessive, inadequate, or unfairly discriminatory rates;
(2) promote the availability of insurance;
(3) promote price competition among insurers to provide rates and premiums that are responsive to competitive market conditions;
(4) prohibit price-fixing agreements and other anticompetitive behavior by insurers; and
(5) provide regulatory procedures for the maintenance of appropriate information reporting systems.