We don't have access to that information , even though it does exist! If anyone else can help on this topic, please do!
I've noticed that on the bottom of the clutch it usually has a year stamped on it, so assuming it was installed when the machine was first assembled, it should give an indication of age.
Obviously if it's been replaced or you have a non-clutch model this doesn't help at all but I though it was worth a mention anyway
I found a DC07 with 2009 stamped on it but wasn't sure if the made them that late??