the chart below shows the total number of minutes in billion of telephone calls in the UK divided into three categories from 1995 2002

The bar charts illustrate the time spent by UK residents on different three call types by category from 1995 to 2002.

It is clear that the number of minutes of local fixed-line was highest throughout the period, while mobiles ( all calls) were lowest over the 8-year period.

local fixed line increased gradually and peaked at 90 minutes billions in 1999, before falling considerably in the next year. the number of minutes of call local reached the lowest at 72 minutes billions in 1995 and 2002.

National and international fixed line and mobiles rose significantly over the 8 years. The national and international fixed line grew remarkably from 38 to 60 minutes billions and peaked at 60 minutes billions. while mobiles increased moderately from 3 to 10 minutes billions from 1995 to 1999, before climbing rapidly in the following year. the number of minutes of mobiles reached the highest in 40 minutes billions in 2002