The three pie charts provide data about expenditure of a certain school in the UK yearly in 1981,1991 and 2001.
Overall, it is obvious that while the majority of the expenses moved to teaches’ salary, the amount of money for insurance stayed the lowest in each period.
Noticeably, there was a slight fluctuation in the percentage of education givers’ income in 1981, accounted for 40% of the total spending, however, after 10 years, this indicator rose to 50% before falling with 5% in 2001. Regarding other workers’ salary which was the second highest spending in the initial year, it experienced a decline from 28% to 15% gradually by the end of the period. Additionally, although it was allocated only 15% of the total spending for both paper materials and furniture in 1981, after a decade, the school reduced funding for furniture with just 5%, and increased spending for books, which was 20%. In contrast, financial demands for furniture and equipment surpassed the trend for books, and reached to 23%, at the same time, the pattern for books became 9% in 2001.
Throughout the given years, the spent money for insurance was the lowest despite growing from 2% to 8% slightly.