Can my adopted daughter get her birth parents’ information?

My adopted daughter is 17 years old and has had a desire to locate her birth parents since she was a young child. We have a great relationship and I am fully supportive of her wanting to know where she comes from, what her medical history is, whether she has other siblings, etc. I know that when I adopted her here in Raleigh, her record was sealed and is not open to the public. What can we do to get her access to her adoption record? Does she have more rights to her birth parents’ information once she turns 18?