That's actually lower that I would have guessed. And lower than what I see on my servers. It's more than 1/2 for sure, and it's hard to guess how much of that other (less than half) part is real people, and not just bots pretending to be people. My 1/2 educated guess is about 40% of traffic to the sites I run is real people on any given day. These are all smallish websites for non-profits, so maybe not an "average" website, whatever that might mean.