Upon request, the commissioner shall be provided with a copy of any rate or form issued in this Commonwealth. Insurers shall maintain complete and accurate specimens or actual copies of all rates and forms which are issued to Commonwealth residents, including copies of all applications, binders, endorsements and other applicable and supporting documents used with rates and policies. Rate filings and forms may be retained on diskette, microfiche or by any other electronic method. Specimen copies shall also indicate the date the rate filing or form was first issued in this Commonwealth.