The pie chart illustrates the proportion of total water consumption by five factors during the ten years from 1997 to 2007. Overall, in both years, the amount of water used in the food industry and building industry respectively accounted for the highest and the lowest percentage among the five factors.
As can be seen from the chart, the food industry saw a slight decline of 7%, from 48% in 1997 to 41% in 2007. Then, the manufacturing and building industry also witnessed a small decline in the percentage of total water usage. In the period between 1997 and 2007, water usage decreased by 4% in manufacturing and 3% in the building industry.
By contrast, the service industry and household sectors dramatically expanded their water usage in 2007. Within 1997 and 2007, the service industry increased significantly from 13% to 25%. At the same time, the figures for household activities rose moderately from 19% to 21%. 
The pie chart illustrates the proportion of total  
water
 consumption by five factors during the ten years from 1997 to 2007.  
Overall
, in both years, the amount of  
water
  used
 in the food  
industry
 and building  
industry
  respectively
 accounted for the highest and the lowest percentage among the five factors.
As can be  
seen
 from the chart, the food  
industry
  saw
 a slight decline of 7%, from 48% in 1997 to 41% in 2007. Then, the manufacturing and building  
industry
  also
 witnessed a  
small
 decline in the percentage of total  
water
 usage. In the period between 1997 and 2007,  
water
 usage decreased by 4% in manufacturing and 3% in the building industry.
By contrast, the service  
industry
 and household sectors  
dramatically
 expanded their  
water
 usage in 2007. Within 1997 and 2007, the service  
industry
 increased  
significantly
 from 13% to 25%. At the same time, the figures for household activities rose  
moderately
 from 19% to 21%.