(a) So long as any of the organizations listed in this subsection shall have an ambulance and provide ambulance service for the benefit of the residents of Kent County, the county government shall appropriate annually and on July 1 in each year shall pay the sum of $750 to such organization for the maintenance of its ambulance:
(1) Robbins Hose Company, No. 1, at Dover;
(2) David C. Harrison Post, No. 14, Inc., American Legion, at Smyrna;
(3) Camden-Wyoming Fire Company.
(b) So long as Carlisle Fire Company, of Milford, shall have an ambulance and provide ambulance service for the benefit of the residents of Kent and Sussex Counties, the county government may annually appropriate for and pay to such Company the sum of $250 for the maintenance of its ambulance.