The given illustration demonstrates data about sales variety categories of fiction books over the five-year period from 2006 to 2010.
Overall, gross earning for all kinds of fiction book fluctuated during this period, while the most famous genre was romance than others, however sci-fi and fantasy books were bought less often.
Regarding the fiction book classification, the romance books was the most popular in each year and the gross earnings oscillated approximately from $55,000 to $110,000 which was fixed in 2007. In addition, mystery books had significant spikes in sales from 2006 to 2007 like romance, increasing from $60,000 to over $80,000, and in the next 3 years this figure was maintained around $50,000.
At the other end of the scale, sci-fi books were the least popular throughout the period and were volatile, except for the final year where classics slumped to a low of just $10 million in sales, while sci-fi sales figures were approximately $15 million at this point. Moreover, the young adult and classics books were same popularity in the middle years, with sales of around $30 million (2007), $20 million (2008) and $25 million (2009), in 2006 and 2010 young adult books were twice as poplar classics.
