The given pie charts provide a comparison of the yearly expenditure on 5 different categories by an educational institution in the UK over a course of 20 years.
From an overall perspective, it is evident that the majority of the school’s budget was allocated for teachers’ salaries. By contrast, insurance required the least amount of money from 1981 to 2001.
Regarding teachers salaries, 40% of the school’s budget was spent on this category in 1981. It was then followed by an increase of another 10%, reaching its peak at 50%, before dropping to 45% in the final year. Other workers’ salaries also received a considerable amount of money; however, there was a steady decline in its figures. In 1981, the proportion of spending on this group started at 28%, followed by 22% in 1991 before falling to 15% in the final year.
In terms of the remaining three categories, despite having the same percentage of budget spent in 1981, at 15%, resources and furniture and equipment underwent opposite trends. While the figure for the former decreased to 9%, that of the latter increased by 8%, reaching 23% at the end of the period. Although starting at a negligible number, taking up only 2% of the total annual spending in the first year, the figure for insurance experienced a four-fold increase to 8% in 2001.