w-pie chart

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 

The pie charts below compare 6 categories of students ....

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 of