Can you cite your source on that? As far as I'm aware (and as Rush Limbaugh stated on his show two days ago), an average of 800 people per DAY move to FL.
There was a story posted here a month or two ago about United Van lines where, in Dec, they had more outbound moves than in bound. Anectdotally, the professional labor market is interesting. There are a lot of engineering type jobs and businesses are resorting to stealing workers from other local companies because professionals cannot afford to move into the state anymore. Housing prices + insurance costs + property taxes are outrageous and the pay isn't there. FL isn't a cheap state to live in anymore.