I don't know any stats or how to come up with them but I know that the idea of homesteading and self suffiency is much more common these days then 10 years ago....shoot, even 5 years ago. And I think that's great!
I, for one, am just getting into "doing" something about homesteading. I've been collecting some of the individual skills all of my life. And if you ask my wife, I'm something of a tool hoarder as well. But it's only recently I've been learning about putting it all together, working to being a husbandsman of a parcel. Now, I just need to get the finances together to get a parcel of land!
We would be very interested in seeing some stats as well. We began our homesteading journey 2 years ago and are well on our way. Due to very limited budget and no desire to go in debt, we are taking it one step at a time.
I don't have the means right now to start a Homestead up so I did in my opinion the second best thing! I stated my Website/Blog about Homesteading, I started Homesteadearth.com I can put all my ideas, plans and info there to store until the means become available or for other people to check out and get ideas too!