The pie charts below show the proportions of the total school expenditure in five different sources between 1981 and 2001. v.1

The pie charts below show the proportions of the total school expenditure in five different sources between 1981 and 2001. Overall, most of the money is spent on teachers’ salaries. Otherwise, the number of other workers’ salaries reduced gradually over 20 years. The rates of insurance slightly increased from 2% (1981) to 8% (2001). By contrast, the spending on furniture and equipment dropped quickly from 15% (1981) to 5 % (1991) before reached the point of 23% in 2001. There was a small rise in the figure of resources and books from 15% (1981) to 20 % (1991) before it dramatically fell to 9% in 2001. From 1981 to 1991, the expenditure on teachers’ salaries climbed slightly from 40% to reach a peak of 50%. By contrast, the spending on other workers’salaries reduced gradually from 28% to 22%. In the next ten years, there was a decrease, in the wages of teachers and other workers, from 50% and 22% (1991) to 45% and 15% (2001), respectively.