Growth isn't over yet fella, you've got at least 2 years, more like 4 or even 5 still to go.
Just make sure your diet is good. good protein, good calories, and let the body naturally function well, so you get good Test and GH production, and it will do the best it can, but apart from Bone lengthening operations in your Legs, which is NOT reccomended, you won't grow to the point where you breathe rarified air

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Anyway being tall isn't all good. Think about all the potential trees and door frames you won't smack your head on. Being moderate height sounds a bit better now doesn't it.
I admit though I like being 6ft 2", but I wouldn't want to be taller, like say Shaq O'neil tall. I wouldn't look good with a ganglian appearance.