Did you mean to write '100 lines/month' up there, or is that an exaggeration for comic effect? I have little experience with bad programmers--but you seem to know enough (or think you do) to throw percentages out there.
Perhaps a slight exaggeration, but not much of one. 200-300 lines per developer per month is the norm in large companies. Most of the time is spent reading crappy code, debugging crappy code, and dealing with crappy workarounds for crappy code. It sucks.
Even very good programmers fall below 500/month if they get mired in legacy bullshit.
