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

The given pie charts demonstrate expenditure changes in United Kingdom schools in 5 different categories namely, insurance,

teacher's

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teachers'

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salaries, furniture and equipment, resources and other

worker's

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workers'

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salaries over the

20_year

Correct your spelling

20-year

period. From an

overall

perspective,a huge amount of

budget

Correct article usage

the budget

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accounted for teachers' wages during 20 years,

moreover

,the least

sums

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sum

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of money

spent

Add a missing verb

was spent

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for

Change preposition

on

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insurance. First of all,all three surveyed years illustrate that

teacher

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teachers

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and other workers' payments had the biggest proportion between 1981 and 2001.Schools spent between 40% and 50% of

its

Correct pronoun usage

their

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funds

for

Change preposition

on

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tutors.

Besides

that,in 1981 28% of schools' prices

utilized

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were utilized

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for

Change preposition

by

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other employees and

also

22% and 15% in 1991 and 2001 respectively.

On the other hand

, investment

on

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in

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resources, furniture and equipment

take

Correct subject-verb agreement

takes

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the

Correct article usage

apply

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third

place.It is interesting to note that between 5% and 23% for

equipments

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equipment

types of equipment

pieces of equipment

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.

Finally

, the proportion of findings which is used for insurance had the least amount among all sections.It started at 2% and

at the

end

Add a comma

,end

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it rose

up

Change preposition

apply

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to 8%.