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

The supplied pie charts depict the shifts in annual expenditure by a certain UK

school

in

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three different times, 981, 1991, and 2001. In general, teachers’ salaries were the highest proportion of annual spending

percentage

.

In contrast

, insurance was consistent as the lowest

percentage

of annual

school

spending over the times observed. Looking at the details, in 1981

teacher’s

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teachers’

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salaries accounted

nearly

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for nearly

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a

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half, 40% of total

school

costs and increased significantly in 1991 which accounted

exactly

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for exactly

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a

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half, 50% and remained the highest spending in 2001 as well, 45%. Meanwhile, other

worker’s

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workers’

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salaries, references, and furniture and tool fluctuated and amassed

big

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a big

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percentage

of

school

disbursement

all together

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altogether

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, it was about 40%

in

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on

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average.

On the other hand

, insurance was the lowest

percentage

of total

school

spending

overall

observed years. It was only 2% of total spending in 1981 and remained the tiniest fraction

subsequently

in 1991 and 2001, 3% and 8% respectively.