The line graph depicts the average annual expenditure on cell phone, national and international fixed-line services in America between 2001 and 2010.
A significant shift in expenditure patterns is evident over the decade, with distinct trends observed in the three service categories.
The most notable trend is the significant increase in expenditure on cell phone services, which rose from approximately $200 in 2001 to $700 in 2010. In contrast, international fixed-line services exhibited a downward trend, decreasing from around $700 in 2001 to $400 in 2010. Meanwhile, national fixed-line services maintained a relatively stable expenditure pattern, fluctuating between $300 and $400 over the decade.
A closer analysis reveals that national fixed-line services started at a high point in 2001, but then experienced a slight increase before stabilizing at around $300 for most of the decade. In contrast, cell phone services began at the lowest point in 2001, but experienced a substantial rise throughout the decade, reaching a record high in 2010. International fixed-line services, after an initial fluctuation, remained relatively stable, with expenditures hovering around $300 for most of the decade.