Please forgive me for my ignorance - but I have no knowledge of how many Anglicans are within the wwAC and how many are without or why they are without.
That's okay. There are about 77 million Anglicans worldwide. There are maybe at most 5 million (I think I am being very generous) in the national churches that are espousing non-Christian beliefs (US, Canada, South Africa, some Britain/New Zealand/Australia).