the three pie charts below show the changes in annual spending by a particular UK school in 1981,1991 and 2001. summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The presented pie charts depict the changes in yearly expenditure by a specific British school in 1981, 1991 and 2001.

Overall

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, teachers’ income comprised the largest proportion of the total budget from 1981 to 2001.

In contrast

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, the insurance expense was consistently the least invested during the same period. It is noticeable that the salaries of other staff continued to

decease

Use the right word

decrease

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over the two decades Between 1981 and 1991, the school increased the spending on teachers’ wages from 40% to 50%.

Additionally

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, the investment

of

Change preposition

apply

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in teaching resources

such

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as books rose 5%, accounting for 20% by 1991. Meanwhile, other staff’s salaries slightly decreased from 28% to 22%,

whereas

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the spending on furniture and equipment was cut by 10%, making up merely 5% by 1991. The budget invested in teachers’ salaries was reduced to 45% by 2001.

Similarly

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, the expenditure on other personnel’s wages dropped from 22% to 15%.

Moreover

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, the financial investment in educational resources heavily decreased to only 9% by 2001.

However

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, the category of furniture and equipment secured a massive distribution of the total spending, accounting for 23% in 2011.