The pie chart reveals data on the sale rates of books, divided into five categories—travel, biography, adult fiction, children’s fiction, and others—over a four-decade period. Looking from an overall perspective, it is readily apparent that adult and children’s fiction books experienced increases, while books in travel, biography, and other categories witnessed declines throughout the period.
In 1972, adult fiction, children’s fiction, and biography each accounted for exactly 20 percent of all books sold. However, fiction for adults and children saw increases by 5% and 2% respectively by 1992, culminating at a maximum of 45% and 25% at the end of the period. In contrast, sales for other and travel books comprised 40% of the total, with 25% and 15%, respectively.
While fiction books experienced growth, the downward trend persisted for books in the ‘others’ and biography categories throughout the period, decreasing to 20% and 15% and further to 12% and 8% by 2012, respectively. Some fluctuations were observed in the sales rate for travel books, which rose from 15% to 18% in 2002, but then showed a downward movement, finishing at 10% in 2012.