The provided graph illustrates the average amount of money that is allocated by Americans for spending on both cell phone and residential phone services over a nine-year period from 2001 to 2010. Units are spent in dollars.
Overall, there was a steady upward trend in the amount of money that was spent on cell phone services, while the proportion of money that was dedicated to residential phone service consistently declined during the specified timeframe.
To begin with, the average financial burden of cell phone services was at its lowest in 2001, at almost 200 dollars, however, as a consequence of the rising popularity in the usage of cell phone in the United States, the money that was spent on the cell phones services increased gradually to peak of approximately 700 dollars throughout the period given.
On the other hand, the residential phone services were the most predominant ways of communication in the USA, with just below 700 dollars in 2001, before dropping dramatically to around 500 dollars in 2006, which was the year was surpassed by the average amount of money was spent on cell phone services. However, it kept decreasing gradually to 400 dollars by 2010.