The pie charts show the proportion of 6 ways of annual spending in Springfield College in three time periods: 1990, 2000, and 2010 years.
In general, percentage of teacher salaries was dominant throughout, with an overall increase. It is also clear that the spending on employees’ salaries excluding teachers’, books, furniture and equipment declined, while the reverse was true for teachers’ salaries, technology, as well as payment for insurance.
In 1990, spending on teachers salaries had the highest proportion out of 100%, with 40 percent; it markedly went up to 50 percent in 2000; and in 2010, the figure was at 45 percent. Initially, spending on technology was at 1%, being at the end of the list, and then went up to 3% in 2000, followed by a dramatic increase to 20% in 2010. In 1990, spending on insurance had 2% out of whole, making it the second from the bottom of the list, and then the same records as technology was seen in 2000. In 2010, four times increase to its initial share was recorded.
By contrast, remaining ways of spending experienced a fall overall. Other workers salaries and spending on furniture and equipment significantly decreased to 15% and 3%, respectively, down from 28% and 14%. After seeing an increase to 20% in 2000, up from 15%, spending on books fell to 9%.