rising from 12000 million minutes in 1995 to just under 17000 million in 2000. After a short peak at 17000 million the following year, these calls had fallen back to the 1995 figure by 2004.
rising from 12000 million minutes in 1995 to a peak of 17000 million in 2000. After that, it fell back to the 1995 figure in 2004.
The other significant changes demonstrated to National and international land-line calls
The total number of minutes of national and international landline calls
in question
What do you mean by "in question" in this sentence?