Simplify the following text for a Grade 8 native English-speaking person.
Original: The population has grown from 471,019 inhabitants in 1990 to 515,207 in 1999 and 565,000 in 2006 ( estimates of the French statistics office INSEE ) .
Simplified: In 1990 , there were 471,019 inhabitants , in 1999 515,207 and 565,000 in 2006 ( INSEE estimates ) .