Each insurer that uses territory as a factor in establishing automobile insurance rates in the State, including the Maryland Automobile Insurance Fund, shall file with the Commissioner a certification statement. The certification statement shall be on the form adopted by the Commissioner in Regulation .04 of this chapter. The certification statement shall be filed: On or before June 1, 2007; Upon completion of each review required by the Commissioner pursuant to Regulation .02 of this chapter; and Contemporaneously with each rate filing that indicates a modification of territorial rating factors.