The pie charts illustrate the annual spending on five different categories by a specific school in the UK during the years 1981, 1991, and 2001.
Overall, it is clear that teachers’ salaries accounted for the largest proportion of the school’s spending, while insurance represented the smallest cost. In addition, with the exception of resources and other workers’ salaries, all other expenditures increased over the period.
In all three years, teachers’ salaries were consistently the highest expenditure, accounting for nearly half of the total. Specifically, the funds allocated to teachers’ wages increased from 40% in 1981 to 50% in 1991, followed by a decrease to 45% after a decade. In contrast, spending on other workers’ salaries fell steadily over the 20 years, from 28% to 15%.
Regarding the remaining expenses, expenditures on insurance made up a minor percentage (2%) of the total in 1981, increasing four-fold to 8% by 2001. The percentages allocated to resources and equipment flactuated. While the former grew from 15% to peak at 20% in 1991, it then decreased by more than half in 2001. The latter dropped by 10% from 15% in the first decade, after which it increased to 23%, ranking as the second largest expenditure throughout the period