The bar chart delineates the fluctuations in the sales of four distinct genres of books over a ten-year period from 2002 to 2012.
At a glance, it is evident that all book categories experienced a rise in sales, with the most significant increase noted in the sales of self-help books. Conversely, the sales of fiction books, although increased, showed the least growth over the decade.
In 2002, the sales of self-help books were the lowest among the four categories, at about 5 million. However, this figure skyrocketed to approximately 20 million by 2012, marking the most substantial growth. Similarly, the sales of educational books and non-fiction books also saw a considerable rise, from roughly 10 million to 15 million and 5 million to 10 million respectively.
On the other hand, fiction books, which had the highest sales in 2002 at around 15 million, experienced a more modest increase. By 2012, the sales had risen to just over 17 million, indicating a slower growth rate compared to the other categories.
