Depends what you mean, Dan - are you measuring it daily to check how much it's growing then? Or is this the winter damaged one that showed signs of putting out a new leaf from the growing tip a while back that's not growing? At all?

No, I have a second one thats around 7 years old I think and was a little damaged by the winter but it only browned the outer leaves of the crown and there is still alot of the crown left. It just looks as though it has stopped growing

Well as long as it looks healthy, it's probably just going slowly.