SDCL § 58-34-49: Savings--Distribution to subscribers.

A reciprocal insurer may from time to time return to its subscribers any unused premiums, savings, or credits accruing to their accounts. Any such distribution shall not unfairly discriminate between classes of risks, or policies, or between subscribers, but this shall not prevent retrospective rating, nor distribution on a retrospective plan nor distribution varying as to classes of subscribers based on the experience of such subscribers.