The three pie charts illustrate the percentage of the annual expenditure at a university in the UK over two decades,starting from 1981.
Overall,it is particularly noticeable that the proportion of spending for salaries on teachers accounts for the largest share of annual spending, while the amount of the insurance,furniture and equipment witnessed a increase within the two decades,there were corresponding declines in costs on things such as books and salaries on other staff.
The percentage of salaries on teachers increased 15% during the first decade,after which it fell to 45% in 2001.It was in 1991 that the percentage of salaries on teachers reached its peak in 53%,which was over half the whole spending.However, at the same time, the proportion of the salaries had a 10% decrease from 1981 to 1991, and by 2001, it continued to decline to end up at around half of its initial situation.
In 1981,the percentages of furniture and equipment, insurance, and resources starting at 15%, 2%, 10%, respectively, faced different trends. While the amount of the resources gradually decreased to its original half in 2001, others experienced opposite situations.The cost of insurance saw a rising trend, growing from 2% to 8% over a span of twenty years.Meanwhile, the figure of furniture and equipment when the figure rose noticeably from 15% in 1981 to 24% in 2001, despite falling at 7% in 1991.