How many people make a living from Home?

I try to earn a little extra by working from home, but it's definitely not enough to make a living off. I do a few survey sites, a little bit of forum talk (like myLot), and some internet marketing. I have never made more than maybe $50 bucks or so a month; it's a nice little extra for some food or a nice movie, but that's about the length of it. Maybe if I could find something a little more real, I could definitely earn more on the internet, or maybe just from home in general.