In the meantime, we all see regular PNP draws of about 500-1000 ITAs per month.According to the recent stats, throughout Oct-Dec, IRCC sent about 15k golden mails per month.
Subsequently, if we turn to my formula given through the link above, in 2022, IRCC will send this number of ITAs:
10,187 + N = 10,187 + 2*15,000 = 40,187 ITAs.
If this trend remains in 2022, ~10k applicants of the prognosed 40k will be PNPs.
Minimum 10k.
So, I think no more than 30k pre-ITA applicants (FSW+CEC) will be invited in 2022.