The graph below demonstrates consumers’ average annual expenditure on cellphone, national and international fixed-line and services in America between 2001 and 2010.
As illustrated in the graph, there was a significant decline in expenditure on national fixed-line, while the international fixed-line remained steady over a period starting in 2001. And the most prominent is the line of cell phone services, which had steep rise, then reached a peak at 740$ in 2010.
From 2001 to 2010, the national fixed-line services went down substantially at 300$; although people weren’t interested much in national services, the annual expenditure on it was still higher than the number of the international fixed-line services which had stay constant between 2001 and 2010. Unlike those services, cell phone services was the most outstanding line in the graph, it had the lowest start but then enormously rise and reached a peak at 740$ in 2010, this number shows the strongly improvement of cell phone services from 2001 to 2010.
Overall, the data illustrates that cell phone services rapidly growth, while national or international fixed-line services followed worse pattern, indicating that people became increasingly engaged in cell phone services, while the national or international fixed-line services weren’t be interested much.