The pie charts illustrate the changes in annual expense by a particular UK school within three periods: 1981, 1991, and 2001.
Overall, the money was distributed mostly for salaries for both teachers and other workers. However, insurance remained the lowest figure throughout the time.
Regarding the most expense on workers, especially for the teachers, stood at the highest proportion among other expenses over the period. Teachers had started at 40% in 1981, increased to half of the spending in 1991. While in the next decade, it dropped insignificantly to 45%. Meanwhile, the percentage of other workers began at 28% and declined to 22%. It kept declining and reached its lowest in 2001, at only 15%.
In contrast, furniture and equipment, resources, and insurance was hovering in low proportion at the first record. Despite starting at the same level as resources at 15%, furniture and equipment experienced a dramatic drop to 5% in 1991, in which it rebounded significantly to almost a quarter in 2001 at 23%. However, resources had a different trend. In 1991, it rose gradually to 20%, then it fell substantially to 9%. Ultimately, Insurance contributed a small portion over the period. Starting at 2% it grew insignificantly by 1% in the next year, but it climbed more than two times in 2001 at 8%.