Simplify the following text for a Grade 7 native English-speaking person.
Original: Dozois is perhaps best known as an editor , winning a record 15 Hugo Awards for Best Professional Editor ( having won nearly every year between 1988 and his retirement from Asimov 's in 2004 ) .
Simplified: He won 15 Hugo Awards for Best Professional Editor . That is more than anyone else , nearly every year between 1988 and his retirement from Asimov 's in 2004 .