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.
This essay question is from Cambridge IELTS 9 Test 2 Writing Task 1.
UK telephone calls, by category, 1995-2002
The bar graph displays total call duration in the UK by category from 1995 to 2002.
Overall, while local calls made over landlines remained the most common calls during the 7-year period, it was mobile calls that showed the greatest increase.
Nearly 75 billion minutes were spent on fixed-line local calls in 1995. This number then climbed to a maximum of 90 billion minutes in 1999 before returning to its original level by 2002. Despite the decrease, this type of call was more common than the other two types throughout the entire period.
National and international calls made from landlines were the second biggest category. Their figure rose steadily from roughly 35 to 60 billion minutes over the period. In comparison, only a total of about 5 billion minutes of calls were made on mobiles in 1995. This number first rose slowly to 10 billion minutes in 1998 and then soared to 45 billion minutes in 2002. Even though mobile calls were the least common calls over the period, the gap between these and the other two types of calls had narrowed by the end of the period.