Three to five years for the squat, one to two years for bench (or longer possibly, for some people bench takes a long, long time to go up) and three to five years for the deadlift. Or it could take less time, but my experience has been that for squats, the 500 to 550 lbs jump is big (still working on it), breaking 300 lbs consistently on bench is hard if you're under 242 and won't be a cakewalk even if you're over that and going from 550 to 600 lbs in the deadlift is far from easy.
A lot depends on the quality of your training. Avoiding getting beaten up will be key, as will focusing on the right things which includes rep capacity with sub-maximal weights.
At a guess, you have a chance of hitting one of those within two years, but the other two may take.much longer.