Complaints received during 1991 totalled 2,040 against a normal annual total of 600 - more than a three-fold increase.

And the outstanding debt which excludes mortgages has seen a three-fold increase to £40 billion.

By 1985, the association had 1,800 members; a three-fold increase from 1975.

The total represents a three-fold increase on the previous decade, but the real death toll is thought to be far higher.

The number of addicted mothers in the city has been estimated at 10,000, a more than three-fold increase in two years.

However, as the press release notes, some have projected a three-fold increase in concentrations by 2010 unless corrective action is taken.

The three-fold increase in its price makes it difficult for this industry to develop and compete on the world market.

This is a three-fold increase in 4 years.

Still, he said, "anytime you see a three-fold increase in an epidemic-prone disease, you've got to be concerned about it."

It population in 1801 was 3082 with steady growth up to 9099 in 1901, a three-fold increase in 100 years.