How old is Phillip Enright from The Cay now?

Phillip Enright is a fictional character from the novel "The Cay" by Theodore Taylor. The story is set during World War II, and assuming he was around 11 years old during the events of the book, he would be over 80 years old if he were a real person today. However, since he is not a real individual, he does not have an actual age beyond the context of the story.