###HUMAN: For those records from the products and each product's manufacturer, give me the comparison about the sum of code over the headquarter , and group by attribute headquarter, display y axis from high to low order., ###ASSISTANT: SELECT T2.Headquarter, T1.Code FROM Products AS T1 JOIN Manufacturers AS T2 ON T1.Manufacturer = T2.Code GROUP BY T2.Headquarter ORDER BY T1.Code DESC