sales volume(объём продаж = sales; объём продаж в стоимостном выражении = sales value.The quantity or number of goods sold or services sold in the normal operations of a company in a specified period. Read more: businessdictionary.comAlexander Demidov)
by volume(Exports to France, the biggest market by volume and second biggest by value, were up 2% to £445 million and 3% to 183m bottles. Alexander Demidov)