The bar graph shows the sum of the automobile users by each thousand residents in mainland China
between 1987 and 1999.
Overall
, Linking Words
it is clear that
 the trend was increasing dramatically during the twelve-year period.
Looking at the chart more closely, one can see that in 1987, the Linking Words
number
 of car owners was only about 25 people in a thousand, but in 1999 it was around four hundred Use synonyms
and 
Correct word choice
apply
ten
 Chinese who had cars. In these 12 years, the Correct your spelling
10
number
 of people who drive cars gained approximately three hundred and ninety in a thousand. That was a very big improvement.  Every four years, the Use synonyms
number
 almost doubled. From 1995 to 1999, the Use synonyms
number
 of cars grew to more than 200. In the year 1993, the figure just ascended slightly, and I guess it was gained probably fifteen. After that every two years, the Use synonyms
number
 of increase was nearly two hundred.Use synonyms