The graph illustrates how the total number of minutes (in billions) of telephone calls in the UK changed in terms of three different categories between 1995 to 2002.
It can be seen from the chat that the number of minutes of telephone calls in local-fixed line played a dominant role from 1995 to 2002. It had a fluctuate tendency, which was the same proportion at 72 billion in 1995 and 2002, and reached peak at 90 billion in 1999.
Besides, other two call types had a different situation, both increased during this period. The number of national and international-fixed line rose at a constant speed from 38 billion in 1995 to 62 billion in 2002. However, the figure of mobile call grow rapidly from 1999 (13 billion) to 2002 (45 billion).
The difference between national and international fixed time and mobiles got smaller from nearly 35 billion in 1995 to about 30 16 billion in 2002
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