I really don't think it has grown much! My new plan, due to me desperately wanting long hair, is to not go any lighter, because now matter what, it destroys your hair.
I use pantene serum on my ends and I use deep conditioners such as Treseme for damaged hair and also hair masks to help it stay in OK condition.
It's also worth getting trims no matter what. I get my hair dresser to just literally trim a couple of MM off each time I get it done.