The popularity of religions

Here's something I found on Wikipedia about the popularity of religions around the world:

Christianity 2.1 billion (see below)
Islam 1.3 billion (see below)
Non-Adherent (Secular/Atheist/Irreligious/Agnostic/Nontheist) 1.1 billion
Hinduism 900 million (see below)
Chinese folk religion 394 million (see below)
Buddhism 376 million
Primal indigenous ("Pagan") 300 million
African traditional and diasporic 100 million
Sikhism 23 million
Juche 19 million
Spiritism 15 million
Judaism 14 million
Bahá'Ã* Faith 7 million
Jehovah's Witnesses 6.5 million
Jainism 4.2 million
Shinto 4 million (see below)
Cao Dai 4 million
Zoroastrianism 2.6 million
Tenrikyo 2 million
Neo-Paganism 1 million
Unitarian Universalism 800,000
Rastafari movement 600,000

Also found this...

:

---

A rising growth rate of Islam.
Among world religions, Islam ranks as the fastest growing faith. This is demographically driven by higher birth rates in the third world rather than by an increase in conversion growth. Worldwide, the number of Muslims has doubled since 1970 to 1.2 billion adherents.

A shift to non-white Christianity.
This century has witnessed the shift of Christianity from a white to a majority position of non-white followers. Today more than 60% of all Christians come from non-white races outside Europe and America.This shift in the center of Christian gravity southward into the Third World has come about from evangelical Protestant church growth in Africa, Asia and Latin America.

A level growth of Nonreligious Persons.
While the growth rate of Islam is increasing, the worldwide growth of persons professing no religion, whether agnostics, freethinkers, atheists or non-religious humanists appears to have plateaued.

---