[Uatu]

Dwarves should get more than humans, as they have a CON +1 bonus (maximum of CON 19, but DC currently caps this at 18).

CON 15 gives +1 hp/level
CON 16 gives +2 hp/level
CON 17 gives +3 hp/level if a fighter, ranger, or paladin
CON 18 gives +4 hp/level if a fighter, ranger, or paladin
CON 19 gives +5 hp/level if a fighter, ranger, or paladin

Thus, a supremely healthy dwarven fighter could possibly get 15 hp/level (a supremently healthy human fighter is limited to 14).