Hard question to answer. It all depends on how quickly the coral settles into your environment and how plentiful the environment is. Flow, nutrients, stability etc. Corals grow at different rates in different aquariums. Set it and forget it is the best method. I like to take grow pictures every several weeks. You will get to watch it grow and you will get the answer to your question.
Some people may be able to chime in and let you know if its a fast or slow grower relatively.