Born in 1955

I was born in 1955 along with my husband Kevin. We have been astounded to notice so many famous (and infamous) people born in the same year. Why this is, I don't know. But here is a list of some of them:
Alfred E. Newman
Arsenio Hall
Bill Gates
Barbara Kingsolver
Bill Condon
Bill Nye
Bill Paxton
Billy Bob Thornton
Bo Derek
Bruce Willis
Chow Yun Fat
Dana Carvey
Debra Winger
Disneyland
Dodi al-Fayed
Eddie Van Halen
Ellen Barkin
Gary Sinise
Greg Norman
Howie Mandel
Iman
Jane Kaczmarek
Jeff Daniels
Jerry Seinfeld
John Hinckley, Jr.
John Grisham
Judy Davis
Julie Hagerty
Kelsey Grammer
Kevin Costner
Maria Shriver
Mark David Chapman
Margaux Hemingway
Mike Huckabee
Nicholas Sarkorsy (Pres. of France)
Olga Korbeu
Peter Galleger
Ray Liotta
Reba McIntire
Rhonda Byrne
Rick Hilton
Rosanne Cash
Rowan Atkinson
Rita Rudner
Steve Jobs
Terry Nichols
Tim Berners-Lee
Tom Bodet
Warren Jeffs
Whoopi Goldberg
Willam Dafoe
Yo-Yo Ma