My first submission, a HORRIBLE SPC rip with shitty drums that shouldn't have even made the panel, was judged in May 2003. I don't know how long before that I submitted it, nor do I remember what sort of altered mind state I was in that lead me to think it was a good idea to subject anyone to listening to that crap.
My first (so far only) OC ReMix was submitted in May 2009, judged in November and posted in December.
So, over 6.5 years. I think there were 7 or 8 submissions of various levels of terribleness and mediocrity in that period.