The 1618 population level was once again reached in 1684.
In the last two years, Connecticut has seen its population level off at 3.3 million, after growing by 20,000 a year from 1985 to 1989.
It could take up to a century to regain their former population level, he said.
Throughout its long history, Athens has had many different population levels.
The Hundreds never again recovered its early population level into the 21st century.
Any environmental problem can be traced back to human population levels.
By 1990 the city had fallen back below its 1900 population levels.
Many regions did not regain their former population levels until the 17th century.
The population level is uncertain, but may be around 400,000.
The 1840 population level was reached again in 1980, some 140 years later.