I'd say it was around the year mark that my chest hair popped up. The first thing I noticed was a massive increase of hair in an already pretty hairy pubic region that slowly crawled up my stomach. Shortly thereafter, my arms, knuckles, hands, shoulders, and legs got hairy/hairier (this was around the six month mark).
A year and a half in, my chest hair (which started around my scar lines) is now climbing up the entirety of the pec on both sides. It seems to be coming in patches in that region, though.
All that being said, you can definitely tell that my stomach and pubic region contain the more 'seasoned' hair while my chest hair, though dark, is still in its new phase. I'm guessing it will all level out in another 2-4 years or so.