Looks like myseniority.com has updated their information as of 4/28/21.

Here's what they show.
Captains retiring:
within 12 months - 105
within 2 years - 246
within 3 years - 383
within 5 years - 751
within 10 years - 2149
within 15 years - 3492

FOs retiring:
within 12 months - 9
within 2 years - 21
within 3 years - 44
within 5 years - 94
within 10 years - 372
within 15 years - 805