If a member of this plan who is entitled to industrial disability retirement benefits is not qualified for voluntary service retirement, he or she shall receive an industrial disability retirement allowance equal to fifty (50) percent of his or her final compensation. If such member is qualified for voluntary service retirement, he or she shall receive a disability retirement allowance of an amount equal to the service retirement allowance he or she would have received if he or she had elected to retire from service on the date when he or she is ordered retired for industrial disability, or a disability retirement allowance equal to fifty (50) percent of his or her final compensation, whichever amount is greater. (Prior code § 34.06.612)