It's probably less "most people" than it was in 1973, though.
Why would that be the case? Has there been a significant spike in farm workers or managers per capita?
Well, I was assuming that people like engineers and programmers weren't "production". There are more of them now than there were in 1973, and fewer factory workers.
Yeah, for service industries, it counts anyone not in a supervisory role, so it'd include them as well. :)
Maybe, but I can't tell by looking. It appears to be roughly the same to me. But my subjective assessment is meaningless. We'd need data.