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

The pie charts compare the expenditure of a school in the UK in three different years over a 20-year period. Looking from an

overall

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perspective, it is readily apparent that teachers' salaries made up the largest proportion of the school's spending in all three years (1981, 1991, and 2001).

By contrast

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, insurance was the smallest cost each year. A deep analysis of the pie charts provided reveals that in the year 1981, 40% of the school's budget went into teachers' salaries.

This

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figure rose to 50% in 1991

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but fell again by 5% in 2001. It can

also

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be seen that other workers' wages saw a sharp decline over a period of 20 years, from 28% in 1981 to roughly 15% in 2001. Looking at the chart in more detail, the percentage of insurance stood at only 2% in1981

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but reached 8% in 2001.

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, expenditure on resources, furniture and equipment experienced a considerable fluctuation. The figure for resources was highest in 1991, at 20%,

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the proportion of spending on furniture and equipment reached its peak at 23% in the year 2001.