This year sales are projected at $15 million, a threefold increase from five years ago.
Saudi banks took on a threefold increase of Government debt from 1989 to mid-1992.
The number reflects a threefold increase in the last three years, and is still growing.
In some countries, a threefold or fourfold increase is expected.
This is a nearly threefold increase from the 110 million users in 2000.
Across Britain, the total is estimated to be more than 4,500 - a threefold increase since 2004/05.
As a result, there has been a threefold increase in the number of comments since June.
That is more than a threefold increase, in today's dollars, for communications and home entertainment.
It has registered significant population growth in the last 50 years, with a threefold increase during this period.
But that number represented a threefold increase from the 13 percent who said so five years earlier.