According to this http://en.wikipedia.org/wiki/Gabriele_Amorth he became an exorcist in 1986, that is 20 years ago. He claims to have performed more than 30,000 exorcisms. That is 1 500 every year for 20 years, or 4.17 per day every year assuming he has 5 days break every year. I do not know the time for an exorcism, but assume 4 hours on average, that require 16.5 hours, give him one hour to eat and he will have on average 6.5 hours sleep. Yes, that is a life...
He must offer group rates