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

The bar chart illustrates the main three categories of phone calls in the UK in seven years from 1995 to 2002. Overall, the local fixed-line calls are the highest of the three categories. However, the other two types, national and international fixed-line and mobile (all calls), have increased steadily during the research period. The local fixed-line calls depicted bell curve distribution during the given period with the highest point of 90 billion minutes in 1999. In contrast, the lowest points had been in 1995 and 2002 with slightly over 70 billion minutes for both years. The national and international fixed-line calls and mobile (all calls) showed a stable rise in their usage. The national and international fixed-line superseded the mobile calls in terms of the number of call minutes. 1995 witnessed the lowest number of minute calls for both categories, with slightly below 40 billion minutes called for national and international fixed-lines and around two billion minutes in mobile calls. On the highest usage side, 2002 was the top year for both, with more than 60 billion minutes for national and international fixed-line calls and about 45 billion minutes for mobile minutes.