No hard stats and this is totally my own speculation but I bet well less then 50% of licensees who pass the test even sign on with a broker.
Example – In my engineering office 3 of us have licenses and I am the only one who practices. 7 friends of my wife obtained licenses in the past 2 years. None of them practice. I know numerous people who used to work for larger brokerages in more of a part time sense (working open houses, being kind of lackeys for high power agents) who have bailed out…
I think the numbers are very hard to assess. Definitely the exodus will continue.
BTW – I do encourage people to take the class and just for their own knowledge. It is all quite basic stuff and I have learned more in the field then in the class but it is still cool to take. Don’t do the on line stuff. It is alot more interesting going to the class and talking to the instructor afterwards.