Ukip's presence has jumped threefold from seven to 21.
In China, yacht imports increased threefold from 2009 to 2010.
Between 1990 and 2010, the population increased threefold from 100,000 to 300,000.
With algorithm-specific optimizations, the throughput of the system increased threefold from an initial naive implementation.
Most of this decade was a golden era for IndyMac, whose profits grew threefold from 2001 to 2006.
Trade between the two countries reached $600m in 2013; up threefold from 2010.
Over all, unacceptable water samples increased more than threefold — from 9 percent to 32 percent — in wet weather compared with dry weather, the report said.
Daulby, 45, was one of several senior officers who spoke to the Guardian about the military's contribution to the Olympics, which increased more than threefold from May last year.
But Caracas is worse, with homicides rising nearly threefold from 1998 to 3,973 homicides last year, for a murder rate of 122 per 100,000, said Active Peace, a group that studies crime trends here.
High school participation has increased more than threefold from a decade ago, when 1,600 girls wrestled during the 1996-97 school year, according to the National Federation of State High School Associations.
As a result, the production of biofuels made from crops that could also be used for food increased more than threefold from 2000 to 2007, the Food and Agriculture Organization said.
