The total number of minutes (in billions) of three types of telephone calls for the 7-year period in UK has illustrated with the bar graph.
Overall, the number of minutes of all mobile calls speedily increased while local-fixed line calls fluctuated and national and international fixed line class raised slightly during the given time.
Starting from the year 1995 with 70 billion minutes, through a gradual increase local-fixed line call hitted its peak at 90 billion minutes. Then it decreased continuously and by 2002 reached at the same value of its beginning point.
A slight upsurge was observed for the national and international-fixed line call where the total number of minutes changed from around above 35 to 60 billion minutes within time limit of 7 years.
To begin with above zero minutes, sum of minutes of mobile calls increased rapidly just above zero to around 45 billion minutes in 7 years. 
The total number of minutes (in  
billions)
 of three types of telephone  
calls
 for the 7-year period in UK has illustrated with the bar graph. 
Overall
, the number of minutes of all mobile  
calls
  speedily
 increased while local- 
fixed
  line
  calls
 fluctuated and national and international  
fixed
  line
  class
 raised  
slightly
 during the  
given
 time.
Starting from the year 1995 with 70  
billion
 minutes, through a gradual increase local- 
fixed
  line
  call
  hitted
 its peak at 90  
billion
 minutes. Then it decreased  
continuously
 and by 2002 reached at the same value of its beginning point.
A slight upsurge  
was observed
 for the national and international- 
fixed
  line
  call
 where the total number of minutes  
changed
 from around above 35 to 60  
billion
 minutes within time limit of 7 years.
To  
begin
 with above zero minutes, sum of minutes of mobile  
calls
 increased  
rapidly
  just
 above zero to around 45  
billion
 minutes in 7 years.