What is Dolly Parton's wealth?

Dolly Parton's wealth, counting own amusement park Dollywood, recording company, cosmetic- and hair company (she is believed to be the largest emloyer in the state of Tennessee), copyrigths and royalties made it in excess of 500 mill. $. She is estimated the 5th most wealthiest female entertainer ever (after Oprah, A.M. Taylor, B. Streisand and Madonna).