The three pie charts below show the changes in annual spending by a particular UK school in 1981, 1991 and 2001

The pie graphs provide information about how yearly expenditures by a particular UK changed over two decades, from 1981 to 2001.

Overall

,

while

the percentage of spending on teachers' salaries, insurance, furniture and equipment increased, that of other employees' wages and resources saw a significant decline.

In addition

, the figures for tutors' pay were consistently the highest ones, and those for insurance were invariably the lowest ones. In 1981, 40% of the total cost was allocated to teachers' salaries, followed by a considerable rise to 50% in the next 10 years before experiencing a slight decrease to 45% in the final year.

Similarly

, the board of the school paid 15% of their budget for furniture and equipment in 1981, after which it saw a sharp growth to 23% after 20 years. A resembling change can be seen in the share of insurance cost, which only was 2% in 1981 before witnessing a four-fold increase in 2001.

Conversely

, spending on other worker's wages accounted for 28% at the beginning of the period examined, after which it continuously shrank to 22% in 1991 and 15% in 2001. A resembling change, but to a lesser extent, can be seen in the proportion of spending on resources (e.g books), which started at 15% in 1981, after that it reached 20% before tumbling to only 9%

at the end

of the stage.