I have come up with the prediction for the 73rd draw.
If it happens on:
Oct 04 -
CRS 433 - ITAs 2786
Oct 05 -
CRS 435 - ITAs 2880
Oct 06 -
CRS 439 - ITAs 2848
The variance in the above calculation is +/- 2 CRS.
Please find below the CRS cut off on each date (in case the number of ITAs issued is more/less than the predicted ITA count):