I was born at 36 weeks, 1987.
8hr labour iirc, peth for pain, was going to have an episiotomy but i ended up coming too quickly.

Brother in early 90's, 38ish weeks, 2 hours labour, no drugs
Brother late 90's, 38ish weeks, 40min labour, no drugs
Sisters late 00's, 33 weeks, 4hr labour iirc, medically ordered epidural in case of emergency c/s required.