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The following charts shows (show)
I would suggest to mention other two categories as well in overall
gradually rise in 12 % (gradual rise of 12%) in the year 2011(
you may write the previous year data without brackets.
as it is reduced to (by) 9% in the year 2011
There is no information on food in body paragraphs , though it was included in overall.
Make use of cohesive devices to establish comparisons etc.
Band: 1.5/3