You have to have several wallets for your bitcoins. (ronpaulcoin.com)
However, with several wallets available, you'll need to thoroughly research your options before choosing one that's right for your needs. (finder.com)
However, it is impossible to give the exact figure of users because of the possibility of some holders owning several wallets and the fact that some bot accounts may also be in existence. (cryptocoinjudge.com)