As soon as there is sufficient money in the special warrant interest fund to pay one year's interest on one or more outstanding warrants, the county treasurer shall notify the holder of the oldest registered warrant or warrants to present the same for payment of interest, and such treasurer shall continue to call all outstanding warrants for payment of interest in the order of registration as rapidly as funds are available therefor. No warrant shall be called for payment of interest until the same shall have been registered for at least one year.
SDCL 7-22-12