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

The three pie charts illustrate how a particular UK school spent its annual budget in the years 1981, 1991, and 2001.

Overall

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, teachers’ salaries consistently accounted for the largest proportion of school spending across all three years.

In contrast

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, insurance took up the smallest share,

although

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it increased over time. Meanwhile, other categories experienced more varied trends

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In 1981, the largest portion of the budget (40%) was allocated to teachers’ salaries.

This

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figure rose to 50% in 1991 before slightly declining to 45% in 2001.

In contrast

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, spending on other workers’ salaries decreased steadily from 28% in 1981 to 22% in 1991, and

then

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to 15% in 2001

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Expenditure on furniture and equipment fluctuated. It dropped sharply from 15% in 1981 to just 5% in 1991,

then

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surged to 23% in 2001.

Similarly

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, spending on resources like books rose from 15% in 1981 to 20% in 1991, before falling to 9% by 2001. Insurance was the least significant expense in all three years, but it gradually increased from 2% in 1981 to 3% in 1991 and 8% in 2001.