The provided chart displays the total duration, in billions of minutes, of telephone conversations in the UK across three categories from 1995 to 2002.
Overall, fixed-line calls were the most prevalent category throughout the period, with a decrease in local-fixed line calls, a relatively stable trend in national and international-fixed line calls, and a significant increase in mobile calls.
In 1995, local-fixed line calls accounted for over 70 billion minutes, approximately half the duration of national and international-fixed line calls. Mobile phone usage was comparatively low at around 2 billion minutes. Subsequently, all three categories experienced gradual increases over the years.
By 1999, local-fixed line calls peaked at almost 90 billion minutes before experiencing a slight decline in the following years. National and international-fixed line calls hovered around 60 billion minutes, whereas mobile calls surged to approximately 45 billion minutes.
