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These are pie charts that show the proportions of yearly expenditure on different things in a UK school in 3 separate years: 1981, 1991 and 2001.
The upshot of the charts is that there was a downward trend in spending on other staffs' wages and resources such as books, which stands in clear contrast to other school expenditure.
It is difficult not to notice that teachers' salaries constituted the largest proportion of school spending over the period. The amount of money paid for teachers rose dramatically, reaching 50% of total spending in 1991, ending at 45% in 2001. The 1981 to 2001 period witnessed a fall from 28% to only 15% in expenditure on other workers' salaries.
Resources such as books had cost school spending 20% by 1991 before declining to 9% by the end of the period. A contrasting development took place in spending on furniture and equipment, where expenditure increased slightly from 15% to 23% of total spending between 1981 and 2001. Similarly, the cost of insurance saw a rising trend, growing from 2% to 8% by 2001.