Whenever a title insurer, upon withdrawing from insurance business in this State, desires to reinsure its policies with a title insurer whose “title insurance surplus fund” is not fully made up, the commissioner may require the reinsurer to increase its “title insurance surplus fund.” The amount of increase shall not be greater than the amount in the withdrawing insurer’s “title insurance surplus fund” nor greater than will fully make up the reinsurer’s title insurance surplus fund. Such increase may be made a condition of the commissioner’s approval of the reinsurance plan.