How do you survey enough people that you get a number of 582,000 out of how many surveyed? Survey by phone, mail, what? Just using the number they gave of 582,000 would require getting back information from over the course of a year, almost 1600 a day. I'm sure this "survey" wasn't over a full year either.
2013 ADOPT A CHIEF
"Often is a word I seldom use"--JP