There are five or six million BahÃ ' Ã s in the world , of all peoples and languages . A BahÃ ' Ã published document reported 4.74 million BahÃ ' Ã s in 1986 growing at a rate of 4.4 % . BahÃ ' Ã sources since 1991 usually estimate the worldwide BahÃ ' Ã population to be above 5 million .