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

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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 give information about the alterations in annual spending by a particular UK school in three years: 1981, 1991, 2001.
In 1981 and 1991, the percentage of insurance was the smallest part in total with only 2% and 3 %, respectively. In 2001, this figure increased moderately to 8%. The average of teachers’ salaries got 40% in 1981 then continually rose at 50% in 1991 and experienced a decrease to 45% at the end of the period. The spending of furniture and equipment reached 15% in 1981 and declined dramatically to 5% in 1991 before going up substantially to 23% in 2001. At the beginning of the period, the cost of resources was 15%. In 1991, the figure experienced an increase to 20% then decreased sharply to 9% in 2001. Other workers’ salaries experienced a downward trend throughout the period, 28% , 22% and 15%, respectively.
Overall, the percentage of teachers’ salaries always constituted the largest part of the pie.

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