The line graph illastrates that the sum total volume of telephone calls in per million minutes of different groups of calls in Denmark during 1995 and 2004.
Overall in the line graph it is noticed that the volume of mobile phone calls was increasing and the volume of national landline calls was decreasing with the flow of time wherer the volume of international landline phone calls approximately remained same.
It is evident that total volume of calls made by national landline was rising significantly during the period of 1995 to 2001 from 12 million per minute to 16 million per minute. After that there was a sharp decline which was nearly 8 percent at the end of the period . On the other hand the line graph of international landline calls remained almost the same with a marginal growth of approximately 2 percent. Farthermore it is seen that there was an equal proportion of call volume between international landline phone calls and mobile calls in the year 2002 and which was 7 percent. Moreover there was a dramatical rise of mobile phone call volume in the end of the period at 2004 which was 12 percent.