UK Telephone calls by category 1995-2005

From the bar chart, we  can clearly see that combined time spent in billions of minutes, on three different kinds of phone calls in the United Kingdom, from 1995-2002.  Overall, local calls were the most popular over the whole period, with national and international calls and calls on mobiles second and third respectively. 
         However the number of minutes spent on international and national calls and mobiles increased over the period, with mobile minutes increasing dramatically, thus narrowing the gap between the three categories by 2002.

In comparison, the highest jump was local calls for rose gradually to reach 90 billion in 1999 and then steadily decreasing 70 billion minutes in 2002.

         National and International calls increased steadily from just under 40 billion minutes in 1995 to a peaked at 60 billion in 2002.

         Mobile calls rose gradually 10 billion minutes, in 1999. After that rose Sharply to reach 40 billion minutes in 2002.

         Finally resumptive lately  in mobile phone usage rising. However local calls in decreased.