The three pie charts below show the changes in annual spending by a particular UK school in 1981 1991 and 2001 Summarise the information by selecting and reporting the main features and make comparisons where relevant

The three pie chart illustrates, the yearly expenditure of a selected school in UK over three distinctive year's such as 1981,1991,and 2001. Units are measured in percentage.

Overall, the greatest amount of money spend for teachers salary which is almost greater than 40% in contrast to the lowest spending on insurance with a maximum of 8% over the three years.

Regarding the first chart, they spend teachers and other workers salary around 40% and 28% respectively. Similarly, resources, furniture and equipment accounts for about 15% and for the insurance a mere 2% money they spend in 1981.
However, after ten years, extra 10% they spend for teachers salary with 50% which is reduced to 45% in 2021. Similarly, in 1991 other workers salary was 22% which is reduced to 15% after ten years. Whereas, they lessened a major amount for resources such as 20% to 9% from 1991 to 2001 , furniture and equipment represents surge from 5% to 23% over the years. Likewise, insurance accounts for 3% and 8% during the year of 1991 and 2001.