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

Three charts compare how the annual

expenditure

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changed in a specific British school over 2 decades from 1981 to 2001.

Overall

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, it is apparent that the teaching staff's salaries always accounted for the highest proportion of the

school’s

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total

expenditure

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over the period shown, whilst the lowest proportion of the budget was allocated for insurance in each of the three given years. Looking closely at the chart, we can see that the percentage of money spent on teachers' salaries remained relatively stable, which grew from 40% in 1981 to 50% in 1991 but ended up at 45% in 2001. It is worth noticing that the

expenditure

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on non-teaching staff’s salaries dropped over the 20-year period, from 28% of the

school’s

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budget in 1981 to 15% in 2001.

On the other hand

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, an exponential increment could be seen in the

school’s

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expenditure

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on furniture and equipment with the figure soaring to 23% in 2001, even though there was a decrease of 10% in previous years.

However

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, the proportion of the total

school’s

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spending allocated to resources

such

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as books followed the opposite pattern, with the figure rising by 5% to 20% in 1991 and falling drastically to 9% in 2001.