The three pie charts show the changes in annual spending by a particular school in 1981, 1991, and 2001.

The pie charts show the total school spending in 30

years

,from 1981 to 2001 in 10

years

intervals in 5 aspects------Other workers’

salaries

,

insurance

,teachers’

salaries

,resources,furniture and equipment.

It is clear that

teachers’

salaries

were always the largest

cost

in

this

period,

whereas

the

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insurance

kept being the smallest one.

Besides

,the change in other workers’

salaries

is the biggest. In 1981,The teachers’

salaries

account for 40 per

cent

of the spending,which is 20 times larger than

insurance

.After 10

years

,teachers’

salaries

increased by 10 per

cent

in the spending and dominated half of the

cost

.In 2001,the

cost

decreased a little to 45 per

cent

,but it still exceed others and it is about 6 times

of

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insurance

spending. The other 3 kinds of spending changed a lot.

Cost

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The cost

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of other workers’

salaries

kept shrinking,

from28

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from 28

per

cent

to 15 per

cent

,

also

its ranks dropped from No.2 to No.3.Spending on resources increased

i

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in

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the first 10

years

,but it fall

then

,even lower than the beginning data.Spending on furniture and equipment dropped first,

while

in 2001,it soar 18 per

cent

,which is the largest increase in

the

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30

years

.