The given charts illustrate information about how much book sold one bookseller from 1972 to 2012.
Overall, it is clear that the adults fiction increased significantly over the period. In 1972 the biography books were one of the highest, while in 2012 experienced a considerable decline.
In 1972, approximately 20% of people bought the adult fiction. The figure rose steadily to around 25% in 1992, before reaching a peak of roughly 45% in 2012. Childeren’s fiction showed a slightly upward trend, increasing from about 20% in 1972 to nearly 25% by the end of the period.
By contrast, the travel books fluctuated over the period. In 1972, travel books started with a significantly lower percentage of around 15%. However, it experienced modestly growth, particularly in 1992, when the percentage climbed about 18%, then gradually decrease to around 10%. Also the biography books had the declined sharply from 20% in 1972 to 8% in 2012. The other types of books were the highest number of buyers about 25%. In 1992, experienced slight decrease(20%), end of the period dropped just over than travel books around 12%.
