Which Wards Have the Highest Demand?

Description

The following plot shows the total amount of cases demanded by each ward, totalled from 2005 to 2014.

Using cases as a measure of demand is problematic, as (for example), a case of peanut butter likely does not have the same cost, nor value to the recipient as a case of popcorn.
As an overall measure of the level of demand for each ward it is reasonable.
Should a dollar figure for each food item be made available, the analysis could be redone on a dollar basis.