Simplify the following text for a Grade 7 native English-speaking person.
Original: This made Frederic the costliest hurricane in the history of the United States at the time ; the figure was not surpassed until Hurricane Hugo in 1989 .
Simplified: At the time Hurricane Frederic was the costliest hurricane to hit the U.S. . This record was beaten in 1989 , when Hurricane Hugo caused about $ 14 billion in damage .