The amount of compensation which shall be paid for an injury to the employee resulting in death, if no amount is payable under § 62-4-12 or 62-4-14, and the employee leaves collateral heirs dependent at the time of the injury to the employee upon the employee's earnings, shall be such a percentage of the sum provided in § 62-4-12 as the average annual contributions which the deceased made to the support of the collateral dependent heirs during two years preceding the injury bear to the employee's earnings during the two years.
SDCL 62-4-15