Through background reading I did on this thread: http://www.mothering.com/community/t/1376211/bill-gates-confronted-on-nearly-48-000-indian-children-becoming-paralyzed-after-vaccine
I found the Indian Polio monitoring website, which publishes regular bulletins on AFP and polio: http://www.npspindia.org/bulletin.pdf
There you can see which fraction of the AFP cases in different states in India were lab tested for polio, how many tested positive, and how many were declared non-polio AFP.
For example in Bihar in March 2013 there were 346 cases of AFP identified. In 2012 in that same state there were 15874 cases, 86% were tested for polio within 14 days and 98% were tested at some point.
As we talked about on the other thread it is wierd that two states (including Bihar above, but also Utar Pradesh) have such high AFP rates (which translate to high NAFP rates as none have test positive for polio in the last 2 years). There is a self published (on the internet) study which claims this is linked to the numbers of doses of the OPV (I think the claim is those states got more OPV boosters because of high AFP rates), but I was unable to find where the person got the numbers of doses from. See the thread for more on that if you're interested and/or feel like searching more. I gave up.