The given charts demonstrate the proprotion of one bookseller in five genres among 3 years: 1972, 1992 and 2012.
Overall, it can be seen from the chart that the percentage of adult and children fiction dominated the chart across in 3 given years. Conversely, the revenue of biography and others gerne experienced a fall. While travel genre showed some volatility.
The most popular genre in 1972 was others gerne, which took up 25%. Furthermore, adult, biography and children’s fiction shared the same figures, at 20%. Travel genre recorded smallest percentages, with only 4%. In the next 40 years, the revenue of adult saw a significant growth, increasing 25% in 1992 and 45% in 2012. While the percentage of children’s fiction witnessed a slight increase from 20% to 22% in 1992, it continued to rise to 25% in the next 20 years.
The categories of biography, travel, and others all showed downward trends . Biography steadily declined from 20% in 1972 to just 8% in 2012, while travel books rose slightly from 15% to 18% in 1992, before falling to 10%. The others category experienced the most notable drop, decreasing from 25% to 12% over the period.