All the proprietary information obtained by the commission or the secretary from handlers, including, but not limited to, the names and addresses of producers, is confidential and shall not be disclosed except when required by a court order in a judicial proceeding involving this chapter. Information on volume shipments, inventory, crop value, and any other information which is required for reports to governmental agencies and the commission, and other information which the handlers request from the commission that gives only totals, excluding individual handler information, may be disclosed by the commission so long as the information excludes individual handler data which shall be kept confidential as provided in this section.