The chart illustrates the percentage of blue cars and green cars sold from 1987 to 2001. Overall, the sales of both cars had a significant fluctuation during the period of 14 years.
According to the chart, the blue car first began at 28% from 1987 to 1988, and then plummeted to 21% in 1989 and further decreased to 17% in 1990. The sales rose significantly in 1991 and reached a peak in 1992, which was 21% and 23% respectively. There was a sharp fall from 1992 to 1993, with 23% compared to 17%. Although the percentage of blue cars remained unchanged in the next year, there was a dramatic weakening to 10%, which was less than 7 % in comparison with the sales in 1994, in the subsequent years. In the last 4 years of period, the sales were level off at approximately 12%.
While most of the percentage of blue cars declined, the sales of green cars had a massive increase but then still fell sharply. In the first three years of the period, the sales were very low, at only 1%, with a high of 2 % in 1989. From 1989 to 1991, there was a rapid growth, with 2% versus 5%. The sales then upsurged sixth times and reached a peak at 30% in 1996. By contrast, in the next 2 years of this period, the percentage declined considerably, with 30% opposed to 20%, and slightly picked up to 21% in 1999. There was a huge fall from 21% to nearly 11% between 1999 and 2000, then steady roughly 11% to the last year of period
The chart illustrates the
percentage
of
blue
cars
and green
cars
sold from 1987 to 2001.
Overall
, the
sales
of both
cars
had a significant fluctuation during the
period
of 14 years.
According to the chart, the
blue
car
first
began at 28% from 1987 to 1988, and then plummeted to 21% in 1989 and
further
decreased to 17% in 1990. The
sales
rose
significantly
in 1991 and reached a peak in 1992, which was 21% and 23%
respectively
. There was a sharp fall from 1992 to 1993, with 23% compared to 17%. Although the
percentage
of
blue
cars
remained unchanged in the
next
year
, there was a dramatic weakening to 10%, which was less than 7 %
in comparison
with the
sales
in 1994, in the subsequent years. In the last 4 years of
period
, the
sales
were level off at approximately 12%.
While most of the
percentage
of
blue
cars
declined, the
sales
of green
cars
had a massive increase
but
then
still
fell
sharply
. In the
first
three years of the
period
, the
sales
were
very
low, at
only
1%, with a high of 2 % in 1989. From 1989 to 1991, there was a rapid growth, with 2% versus 5%. The
sales
then upsurged sixth times and reached a peak at 30% in 1996. By contrast, in the
next
2 years of this
period
, the
percentage
declined
considerably
, with 30% opposed to 20%, and
slightly
picked up to 21% in 1999. There was a huge fall from 21% to
nearly
11% between 1999 and 2000, then steady roughly 11% to the last
year
of
period