the three pie charts below shows 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.

The given three pie charts illustrate the changes in yearly spending by an educational institute in the time of 3 decades

that is

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1981, 1991 and 2001.

Overall

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, it can be observed that in all three years, a significant proportion of money is invested in tutors' wages followed by workers' salaries. In the year 1981, out of all the total spending, the salaries of teachers and workers were 40% and 28% respectively followed by resources and, furniture and equipment which were exactly the same(15%). The money given to insurance was the least(2%). After a decade, expenses of teachers' salaries and resources rose 10% and 5% sequentially whilst expenditures behind workers and furniture fell 6% and 10% in the order. Insurences' spending was almost the same with a rise of only 1%.

Finally

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in the year 2001, except for the insurance and furniture

equipment

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equipment,

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all the remaining 3

expences

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expenses

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fell down.