How many infallible pronouncements have been made and what were they.
As far as I know there are three. Possibly four.
1. The Infallibility of the Pope
2. The Immaculate Conception of Mary
3. The Assumption of Mary
4. The impossibility of ordaining women
The last is still debated by some agitators for priestesses and Rome has not definiteively identified this statement (which on its surface seems to be preaching infalllibly) as infallible.
You should also note that these are just the formal announcments made since the defining of the doctrine of infallibility itself. It shoudl not be construed to mean that the Church has never claimed an infallible teaching for such fundamental ideas like "Jesus is God" or "Christ died for our sins." These teachings almost go without saying that they are infallibly proclaimed.
SD