help

hello my name is bobby. I had this game maybe back in 2010 on my old ipod(broken now) I had every animal imaginable and my zoo was rated A+, I had probably somewhere between 100 and 200 animals. everytime I re-download this game it makes me start my zoo over, and all I want is my old zoo back. if someone is reading this and can help me, it would be greatly appreciated

.(bobby 2). about Tap Zoo