The line illustrates consumer average yearly expenditure on cell phone, domestic and international fixed-line and services in America over a period of 9 years from 2001.
Overall, cell phone services changed a lot during the process; it was the lowest in the first stages and highest in the later stages. Besides, cell phone services had the highest percentage, while national fixed-line services had the lowest percentage. However, international fixed-line services remained stable.
Regarding the year 2001, national fixed-line services declined significantly to $600 in 2002, but later decreased sharply in 2003, while there was a dramatic rise of $100 in the number of cell phone services, which was followed by a remain stable to 2003. In addition, national fixed-line services had the highest percentage at $700; meanwhile, cell phone services and international fixed-line services had the lowest percentage at $200 and $250, respectively. After increasing markedly to $300 in 2002, the number of international fixed-line services then grew slightly to $320 in 2003.
From 2003 onwards, the number of national fixed-line services fell considerably to $500 and the number of cell phone services increased significantly to $500, but international fixed-line services dropped slowly between 2003 and 2004. However, both cell phone services increased noticeably and national fixed-line services decreased dramatically to the last stage. However, from 2004 onwards, international fixed-line services remained stable for most of the period.