I don't know the answer to your question, but would suggest you go to <gaswork.com> and look at the jobs offered.
I do know that nurse anesthetists have many more practice options than AAs. We can practice in private independent practice, whereas an AA must always be supervised. Many CRNAs are making incomes of well over $150,000 a year, with opportunities to go higher if they want to work longer hours or take on additional work.
There is nothing better than doing what you love and getting paid for it.