The town's population has remained relatively constant over the years at around 1,000 residents.

The other advantage, he noted, is that the price of wind power remains constant over the years.

Like the town's population, the number of students has remained constant over the last five years.

It states that the total amount of energy in an isolated system remains constant over time.

Thus, the thresholds remain constant in real terms over time.

That set of suggestions has remained pretty much constant over the half decade.

An individual's premiums, in general, will remain constant over the years.

The overall success rate has remained fairly constant over the years at about one in five cases.

Usually the costs of a health and safety intervention are not constant over time.

He said the proportion had been fairly constant over the years.