The given chart illustrates the proportion of costs for purposes in a UK school between 1981 and 2001.
Overall, there was a mixed change among the five main features, with only the rate of insurance experiencing an upward trend, while the proportion of other workers’ salaries witnessed a downward tendency. Meanwhile, the remaining figures fluctuated over the given period.
The rate of fees for insurance rose steadily from 2% in 1981 to 3% in 1991, then up to 8% in 2001. In contrast, other workers’ salaries had the opposite changes compared with insurance. In other words, the percentage of salaries for other workers decreased by about 7% to 8% each decade, which were 22% and 15%, respectively.
The proportions of the remaining features, which involved teachers’ salaries, resources, and furniture and equipment, fluctuated. To be specific, the percentage of teachers’ salaries rose dramatically from 40% in 1981 to 50% in 1991 before dropping to 45% in 2001. The rate of costs for resources increased slightly from 15% in the first year to 20% in 1991, which was followed by a surge to 9% in 2001. Lastly, the percentage of furniture and equipment decreased significantly from 15% in 1981 to 5% in 1991, then rose remarkably to 23% after another decade.