Spun Pile Prod-Rates

I am on the process of establishing the duration for piling works with info below:

Type of Pile : Spun Pile (Concrete hollow)
Size : 600mm Diameter
Penetration depth : 40 mts.
Qty : 6,000 nos.

I appreciate any idea you can share, regarding productivity rates for driving /installation of spun pile, in:
a) man-hours per pile or
b) numbers per day per equipment.

Many thanks,
Larry R.