The three pie charts show the every year expenditure of Spring College in 1990, 2000 and 2010. Overall, the amount of money spent on staff’s salaries was the largest. In addition, while technology and insurance spending increased, furniture, equipment, and books fluctuated or declined.
The paying staff accounted for the majority of the college’s budget, with teacher salaries dominating the category, increasing from 40% to 50% before decreasing to 45%. The amount of money spent on other worker’s salaries dropped gradually, from 28% in 1990 to 15% in 2010.
In terms of other expenses, from 1990 to 2010, insurance and technology spending increased noticeably, from 2% to 8% and from 1% to 20% respectively. In the same period, the expenditure on infrastructure and books fluctuated and decreased, from 14% to 3% and from 15% to 9% respectively.