The line chart illustrates the amount of 
sales
 of three Use synonyms
books
 (Use synonyms
children’s
 Use synonyms
books
, Use synonyms
adult
 Use synonyms
fiction
, and educational Use synonyms
books
) in a particular country from 2002 to 2006, measured in Use synonyms
million
 Use synonyms
dollars
.
Use synonyms
Overall
, Linking Words
while
 Linking Words
adult
 Use synonyms
fiction
 experienced a decline in Use synonyms
sales
 over the period of five years, Use synonyms
children’s
 and educational Use synonyms
books
 showed an upward Use synonyms
trends
, with Fix the agreement mistake
trend
children’s
 Use synonyms
books
 recording the highest Use synonyms
sales
 by 2006.
In 2002, 45 Use synonyms
million
 Use synonyms
dollars
 accounted for Use synonyms
adult
 Use synonyms
fiction
, the most among all three kinds, followed by Use synonyms
children’s
 Use synonyms
books
 at just over 30 Use synonyms
million
 Use synonyms
dollars
 and Use synonyms
education
 kind with approximately 25 Correct article usage
the education
million
 Use synonyms
dollars
. Use synonyms
Adult
 Use synonyms
fiction
 dropped to almost 40 by 2004. Use synonyms
This
 amount continued to Linking Words
fell
 in the next two Wrong verb form
fall
year
, reaching 30 Fix the agreement mistake
years
million
 Use synonyms
dollars
 in 2006. Regarding educational Use synonyms
books
 witnessed an increase in Use synonyms
sales
 from 25 in the first year to about 30 Use synonyms
million
 Use synonyms
dollars
 in 2003, before Use synonyms
felling
 to 25 Use the right word
falling
million
 Use synonyms
dollars
 in 2005. After 2005, the Use synonyms
sales
 recovered to slightly above 30 Use synonyms
million
 Use synonyms
dollars
 in the final year. It was overtaking the educational kind. 
Use synonyms
By contrast
, Linking Words
children’s
 Use synonyms
books
 increased consistently over the period shown, peaking at 55 Use synonyms
million
 Use synonyms
dollars
 in 2006. It was Use synonyms
outnumbering
 Wrong verb form
outnumbered
both
 of the other kinds.Change preposition
by both