Estimates of its age vary from 2 to 4 billion years.

Estimates of the current population vary between 6,300 and 10,000.

Estimates for the early 21st century vary between 150,000 and 500,000.

Estimates of the cost to the state varied from about $5,600 a job to $13,000.

Estimates vary, but up to half are either morning or evening people.

Estimates also vary when it comes to the number of schools.

Estimates vary about the number and quality of financial jobs in the city.

Estimates vary, but these local groups may have had a population of up to two hundred people each.

Estimates vary on the number of employees who might take family leave under the new law.

Estimates of their date vary from the late 10th to the early 11th century.