The diagram illustrates the amount of money spent on 4 different kinds of bread over the period from 2001 to 2005.
Overall, wholegrain bread remained the first position in the early stage, but dropped to third place by the end of the period. Meanwhile, brown, white and rye bread were all started at the same level, remained 0.6 dollars each.
Moving to a detailed analysis, wholegrain bread was in the leading position during the first two years, at 0.8 dollars in 2001 and approximately 1.8 dollars in 2002. But in the next two years, the price of wholegrain bread decreased steadily, at 1 dollars in 2003 and roughly 0.7 dollars in 2004.
By contrast, while the cost of wholegrain bread in 2005 was the same at its beginning, both brown and white bread showed dramatically increased throughout the period. Evidently, brown bread price rose sharply from 0.8 dollars in 2001 to nearly 1.5 dollars in 2002, and peaked at 1.6 dollars in 2003 and 2005, whereas white bread cost witnessed a gradually increased, climbed by 0.4 dollars in the 2001-2002 period and then went up by around 0.1 dollars in the rest of the period. In addition, the figure for rye bread price described no significant change, staying close to 0.6 dollars in the remaining time.