The line graph illustrates the average amount of money spent annually on mobile phone, national and international landline services in the US over a period of 9 years from 2001.
It is clear that while there was a significant increase of Cell phone services expenditure, the opposite was true for National fixed-line services spending. Also, the figure for International fixed-line services remained stable during the period.
In 2001, National fixed-line services was the most money spent telecommunication by US residents, while they spent only around 200$ each on International fixed-line and Cell phone services. Over the next 5 years, National fixed-line services witnessed a significant fall by around 200$. By contrast, yearly spending on Cell phone services experienced an increase of approximately $300. At the same time, the figure for International fixed-line services varied slightly below 300$.
In 2006, Cell phone services was as popular as National fixed-line services, spent the same at $500. From the year 2006 onwards, annual expenditure for National fixed-line services decreased dramatically to around $400 in comparison with sharply growth of Cell phone services to over $700. During the same period, there was a stability in the figure for International fixed-line services.
