Grvtykllr has accurately summarised the position with his usual style. You may grow more or you may not. If your father/older brothers/uncles have big penises, that increases the chances you will grow more; if they are small it reduces them. If you don't grow in the next year you can be fairly confident you have finished.
You are actually now at the average for caucasians as well.
Have no fear!
I am fairly old for having had it take 39 years to find the love of my life, so I tell you, I have seen a large number of penis'.
Some are large, pretty few really. Those hurt, sorry, but having a large cock is not always an asset! The normal size vagina (of which I am somewhat of an expert by way of delivering babies for a living ;-) could not take an above average size penis. Although, that being said, there are some vaginas which are seriously huge (like fisting is easy...) Some are so dang small I could just barely put in two fingers....
The moral of the story?? Find a vagina for you, there's one out there, of that I am sure.
You are you and I am I and if by chance we find each other, it is beautiful. (paraphrased)
Frederick S. Perls