How tall, approximately, will i be when i reach 20?

Im 16 and 5ft 7 1/4. My mother is 5ft 4 and my father is 6ft 4, i was just hoping that some one with more knowledge than me could have an approximate guess at how tall i could potentially be. I started my period at the age of 12 and have heard that you stop 'growing' about 1-3 years afterwards. Fingers crossed that i can reach 5ft 11 with out the aid of heels! Many thanks.