The county commission is hereby authorized to suspend the levy of the tax imposed pursuant to this subpart in the event annual increases in the ad valorem tax revenue and/or the offshore severance tax revenue received by the county in the period from October 1, 1991, to January 1, 1995, exceeds the amount of revenue collected pursuant to this subpart. In the event the levy of the tax is suspended, all expenses of taxpayer notification, unconsumed forms, and other actual and direct expenses of the Department of Revenue shall be paid by the county commission.