How old is sonic the hedgog

Sonic: 15
Tails: 8
Knuckles: 16
Amy: 14
Cream:6
Shadow:50+ (hes physically ageless!)
Rouge:18
Cosmo: 8
Charmy Bee: 6
Espio: 16
Vector: 20
Sonia the hedgehog: 15
Manic the hedgehog: 15
Jet: 14
Wave: 18
Eggman: 50+
Eggman Nega: 56+
Metal sonic: ??? (due to many creations)
Blaze: 14
Silver 14
Tikal: 14 There u go every sonic persons age i know of :)