Notwithstanding the requirements of Kan. Stat. Ann. §§ 40-952 and 40-955, and amendments thereto, a filing made by an insurer for personal insurance under this section that provides for an overall statewide rate increase or decrease of no more than 12% in the aggregate for all coverages that are subject to the filing may take effect the date it is filed. The 12% limitation shall not apply on an individual insured basis. No more than one rate filing may be made by an insurer pursuant to the expedited process provided in this section during any period of 12 consecutive months, unless the combination of such rate filing and all other rate filings made by such insurer within the preceding period of 12 consecutive months does not result in an overall statewide increase or decrease of more than 12% in the aggregate for all coverages that are subject to such filing.