2004-2005 I made $20/hr for private, $22/hr for instrument students flying C152's and 172's(old ones). No pay for non ground/flying activities. I did supplement pay by working in the shop for $8/hr and helping the mechanic's with 100hr's etc..
I had 120hrs dual given prior to that job, but even zero-time CFI would've gotten that there, all part 91 small FBO, detroit area.