the full pie is 100 percentage.
It can show numbers.
If there is no time line, you can not say number decreases or increaes.
Don't describe each country separately.
Don't describe each year separately.
Compare countries and years together
Mention all categories.
Paragraph 1 Introduction. Paraphrase the question.
five categories of
Paragraph 2：
It is noticeable that sth fell , while sth rose.
Paragraph 3:
the equivalent figure for another kind was....
Paragraph 4:
highest proportion
roughly 15%
in terms on
cost took
spend .. money on..
by 2008, expenditure had fallen
budget went on
accounted for the highest proportion