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

The pie charts illustrate the variations in yearly expenditure in one

school

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in the UK across three separate

years

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. The biggest cost for the

school

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in all three

years

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was paying teachers’ wages. The other significant

trends

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trend

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were

Correct subject-verb agreement

was

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that the amount spent on insuring the

school

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went up steadily,

while

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the money spent on other workers’ salaries gradually went down. In 1981, the

school

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spent 40% of its budget on paying teachers, and

this

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went up to half of the total annual budget in 1991 before falling slightly to 45% 10

years

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later. Wages for people other than teachers accounted for around a quarter of total outgoings in 1981 and 1991, but

this

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decreased significantly to just 15% in 2001. Insurance costs made up a tiny proportion of yearly outgoings in the first 20

years

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, but

this

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rose to nearly one-tenth of the total budget in 2001. Resources fluctuated between 9% and 20% over the three

years

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,

while

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costs for furniture and equipment varied more widely, between 5% and 23%.