Simplify the following text for a Grade 12 native English-speaking person.
Original: The outflow of population turned around , as the city once again became the destination of immigrants from around the world , joining with low interest rates and Wall Street bonuses to fuel the growth of the real estate market .
Simplified: Many people who had moved out of the city came back because the city once again became the destination of immigrants from around the world , joining with low interest rates and Wall Street bonuses to fuel the growth of the real estate market .