The commissioner shall furnish blanks to all licensed creameries, cheese factories, condenseries, drying plants, ice cream plants, ice milk plants, milk plants, and producer-distributors for the purpose of making a report of the amount of milk and milk products handled. Each proprietor or manager of those businesses shall report to the commissioner on the last days of June and of December of each year, or immediately upon cessation of operation, the pounds [kilograms] of butterfat in cream, the pounds [kilograms] of manufacturing grade milk, and the pounds [kilograms] of bottling milk purchased during the period covered by the report, the aggregate amount paid for each, the number of pounds [kilograms] of butter and cheese, and the number of gallons [liters] of ice cream and ice milk manufactured during such period.