The bar chart shows sales of four types of books (Hobbies, Entertainment, History, and Art) from 2002 to 2012.
Overall, History books sold the most in every year, while Hobbies books were the least popular. Entertainment and Art books had moderate sales, which slowly increased during the period.
In 2002, sales of History books were about 4,000 copies, much higher than the other three categories. Their sales kept rising and reached the highest point of around 10,000 copies in 2008. After that, there was a small drop, but sales still stayed above 9,000 copies in 2012. On the other hand, Hobbies books started with less than 1,000 copies sold and almost did not change at all until 2012.
Entertainment books showed steady growth. Sales went from about 2,000 copies in 2002 to around 4,000 copies in 2012. Art books also rose gradually, increasing from about 3,000 copies in 2002 to nearly 4,500 copies in 2012.
In summary, History books remained the most popular throughout the years, while Hobbies books stayed the least popular. Entertainment and Art books showed slow but clear upward trends.
