The given piecharts illustrate the propotion of five types of books which sold by bookseller in years 1972, 1992, and 2012.
In 1972, adult fiction, children’s fiction and biology books made up 20% for each. In addition, there were 15% of travel books and one-fourth of others. However, in 1992, there was a slight rise of adult fiction, travel, and children’s fiction books by 5%, 3%, 2% respective. Moreover, the percentage of biography and others decline by 5% each.
After 10 years, the adult fiction books was the highest percentage which accounted to nearly 50%. The second was children’s fiction books at 25%. Additionally, there was a subtantial decrease of biography, travel, and other at 8%, 10% and 12%.
Overall, while the propotion of adult fiction and biography was familier figure in the beginning year. However, adult fiction books was the highest percentage, and biography books was the lowest propotion in 2012.
