The efforts to translate and decode ended in 1980. Some American traitors' names were not released owing to the traitors' "privacy" rights, I believe.
A little more sarcasm: check the MSM employee names of the 50s, '60s, 70s, 80s, 90s. . . .
Only about 3,000 documents total were translated and decoded, I think. Many of those (if not all) were released apparently with some redaction.
Yes, and while it’s never been publicly stated how it was done, the likeliest scenario I have read was that the Russians re-used one time pads, making them almost worthless if someone can match two messages using the same pad.