You can join our fellowship and take over the service task of tracking these autonomous groups of anonymous drunks if you want. But, it sounds like you don't want what we have. That's OK, too.
We do a survey every few years, and publish a pamphlet about it. There's some numbers in the conference Final Report. I don't know them off the top of my head.
What can be done is a decent estimate of our numbers in the US and Canada. Professionals estimate one in 10 people are alcoholic? I don't know, that's what I recall from years ago. From that and population data, I think I extrapolated the percentage of alcoholics sober in AA. That doesn't say anything about how many have tried AA, and there are huge error bars on all this stuff, but AA does work very well for large numbers of us. About 2 million or so in the US and Canada? I dunno, maybe I'll dig something up Thursday.
One thing our survey shows is a large percentage, I seem to recall over half, have also had professional counseling or treatment. I think it was 8 years ago I took a hard look at some statistics extrapolated from the survey, and it clearly shows if you make one year, you have a good chance at long term sobriety. I also recall being in the middle of a lot of the stats - sober 12 years, go to 2-3 meetings a week, 40's, male, some college (I didn't have my 4 year degree then).