Section 90. Dividends

Policyholders insured in the state insurance fund may
  be  divided  into  such  groups as shall be equitable for the purpose of
  accounting and declaration of dividends but for the  purpose  of  paying
  compensation  the  state  fund  shall  be  deemed  one  and indivisible.
  Separate accounts shall be kept of income and  of  losses  and  expenses
  incurred,  including  contributions  to catastrophe surplus and reserves
  adequate to meet anticipated losses and carry all  claims  to  maturity,
  for each such group. If such accounting shows a balance remaining to the
  credit  of  the  group at the close of any policy period, which shall be
  deemed to be safely and properly so applied, there may  be  credited  or
  paid  to  each  individual  member of such group such proportion of such
  balance as the amount of his earned premium sustains to the total earned
  premium of the group for the period for which the accounting is made. If
  any member who has withdrawn from the group would  otherwise  have  been
  entitled to such a dividend, the same may be credited or paid to him.