That seems about right to me. Everyone grows at different rates so everything is normal. I have always been really tall im 15 and 5 ft 8 which is about 179cm! in which is taller than most people my age. But I also have friends who are only 5ft tall (152cm) and they are the same age as me. Everyone is different there is no 'normal' height to be.
I don't know.
but dude I was like...5'2.
now I'm 19 & still 5'2...lol..naw j/k.