OK just an old fart but:
In the 1970's the company I joined demanded 2000 to sit in the right hand seat of a 737 and 5,000 for earliest move into the left.
Currently how many hours to sit in the right seat (the Ethiopean F/O Ahmed Nur Mohammod Nur, 25 had 361 hrs) and how many airlines now consider that 2000 hours is sufficient experience for the LHS.