Band 7+: The chart below shows the total numbers of minutes (in billions) of telephone calls in the UK, divided into three categories from 1995 to 2002. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The bar graph illustrates the volume of telephone calls in the United Kingdom, measured in billions of minutes, across three different categories from 1995 to 2002. The categories include local fixed-line calls, national and international fixed-line calls, and mobile calls.

Local fixed lines remained the most prominent type of three telephone calls. Meanwhile, both national and international fixed-line and mobile phone calls increased, with a notable rise in mobile call numbers during this period.

One of the most striking trends is the dramatic rise in mobile phone usage throughout the period. Mobile calls increased significantly from approximately 3 billion minutes in 1995 to around 45 billion minutes in 2002, representing a fifteen-fold increase. This growth was particularly pronounced between 1999 and 2002.

Regarding fixed-line calls, local calls remained the dominant category throughout the period, though showing a gradual decline towards the end. Local fixed-line calls peaked at approximately 90 billion minutes in 1998-1999, before decreasing to about 70 billion minutes by 2002. National and international fixed-line calls displayed a steady increase from about 35 billion minutes in 1995 to roughly 60 billion minutes in 2002.