The line graph shows the average annual expenditures on cell phone and residential phone services between 2001 and 2010.

The graph above illustrates the yearly amount for spending on average of two different types of

phone

services from 2001 to 2010. Generally speaking, it is apparent that the expenditure for

cell

phone

service

saw a constant decrease throughout the entire period,

while

the figure for residential

phone

service

rose over the same time frame. Focusing on the period 2001-2006, in 2001, most of the consumers chose to

cell

by residential

phone

, with the amount of services consumption standing at just below $700 in 2001, the peak of the whole survey,

while

the data for

cell

phone

service

was at only around $200 in the same year.

Subsequently

, the annual expenditures of these two categories of

phone

services were equal in 2006, at roughly $550. In the following 4-year period, there was a steady incline in the figure for

cell

phone

service

, reaching approximately $750 in 2010,

although

the average data for residential phones dropped continuously until the end of the whole investigation, which reached close to $400 in the

last

year.