All documents required by the Insurance Code to be retained by the insurance premium finance company, and copies of documents signed by the borrower, shall be available for inspection at any time by the Department or its authorized representatives. These documents shall be retained for a period of four years from the date a final entry is made thereon. Records of paid out loans shall be retained in original form for a period of at least one year following the date of the last examination by the Department after which such records may be microfilmed for the remainder of the statutory period under the Insurance Code.