The pie charts illustrate the distribution of five distinct genres of books sold by a bookseller over a period spanning four decades, from 1972 to 2012.
Overall, there is a notable increase in the market share of fiction books, particularly adult fiction, while the remaining genres experienced a decline in sales.
In 1972, adult fiction represented 25% of total sales, while children’s fiction and biography each accounted for 20%. Travel books comprised 15%, and other genres collectively held 20% of the market. By 1992, adult and children’s fiction had both risen to 25%, whereas biography experienced a decrease to 15%. Travel books witnessed a modest increase to 18%, and the ‘others’ category remained stable at 20%. The most significant transformation occurred by 2012, when adult fiction surged to dominate the market, representing 45% of sales. Children’s fiction also made gains, climbing to 25%.
Conversely, the remaining genres saw a steady decline. The proportion of biography plummeted from 20% in 1972 to a mere 8% by 2012, marking the most considerable drop among all categories. The share of travel books initially began at 15%, saw a slight rise to 18% in 1992, but ultimately decreased to 10% in 2012. Finally, the ‘others’ category, which started at 20%, experienced a gradual decline to only 12% over four decades, indicating a shifting consumer preference towards fiction.