World Fact Book on Religion

Percentages of the total world population:

Christians 33.32%
(of which Roman Catholics 16.99%, Protestants 5.78%, Orthodox 3.53%, Anglicans 1.25%),
Muslims 21.01%,
Hindus 13.26%,
Buddhists 5.84%,
Sikhs 0.35%,
Jews 0.23%,
Baha'is 0.12%,
other religions 11.78%,
non-religious 11.77%,
atheists 2.32% (2007 est.)