The line graph compares average yearly spending by Americans on mobile andlandline phone services from 2001 to 2010.
It is clear that spending on landline phones fell steadily over the 10-yearperiod, while mobile phone expenditure rose quickly. The year 2006 marks thepoint at which expenditure on mobile services overtook that for residentialphone services.
In 2001, US consumers spent an average of nearly $700 on residential phoneservices, compared to only around $200 on cell phone services. Over thefollowing five years, average yearly spending on landlines dropped by nearly$200. By contrast, expenditure on mobiles rose by approximately $300.
In the year 2006, the average American paid out the same amount of money onboth types of phone service, spending just over $500 on each. By 2010,expenditure on mobile phones had reached around $750, while the figure forspending on residential services had fallen to just over half this amount.