Nothing in this Article shall be construed to prohibit or regulate the payment of dividends, savings, or unabsorbed premium deposits allowed or returned by insurers to their policyholders, members, or subscribers.  A plan for the payment of dividends, savings, or unabsorbed premium deposits allowed or returned by insurers to their policyholders, members, or subscribers shall not be deemed a rating plan or system. (1977, c. 828, s. 2.)