The bar chart below demonstrates the number of phone calls in UK, in three categories from 1995 to 2002 (in billions).
Overall, the common usage is local calls over the years. Meanwhile, the National and International call is the second whereas mobile phone call is the third respectively, interm of number of minutes. Especially for mobile phone there is a significant increase from 1995 to 2002.
In Local call the number of minutes used are gradually rose from 70 billion minutes in 1995 to 90 billion minutes in 1999, however, the figure kept declining to 60 billion in 2002. National and International call in 1995 showing that below 40 billion minutes continuing increase until 2005.
In case of mobile phone calls are rapithly increased from below 10 billion in 1995, whereas from 2000 significantly jumping or even double to 40+ billion in 2002. Overall local call usage is the highest among the categories.
