The growth rates of the Abrahamic religions from 1910-2010 were as follows: Judaism .11%, Christianity 1.32%, Islam 1.97%, and Baha’i Faith 3.54%.
From 2000-2010 Islam became the fastest growing religion (1.86 %) and the Baha’i Faith was the second fastest growing religion (1.72%).
The growth rates of the Baha’i Faith were higher than Islam from 1910 to 2010 because it includes the “formative age” of the Baha’i Faith (1921-1944)
FOURTH PERIOD: THE INCEPTION OF THE FORMATIVE AGE OF THE BAHÁ’Í FAITH 1921–1944
Growth has slowed down since 2000 because the new Baha’i Faith goal is community building so the emphasis is not teaching the Faith.
Since the year 2000, religion has made resurgence whereas atheism and agnosticism are on the decline.
Atheism was growing at a rate of 6.54% from 1910-2010 but dropped to a growth rate of 0.05% from 2000-2010. It is also interesting to note that agnosticism was growing at a rate of 5.45% from 1910-2010 but dropped to a growth rate of 0.32% from 2000-2010. That demonstrates that both atheism and agnosticism are on the decline but also that there are many more agnostics than atheists.
Also interesting is that there were only 136,652,000 atheists in 2010, but there were 676,944,000 agnostics.
The growth rate of the Baha’i Faith far exceeded Christianity from 1910-2010 (3.54% vs. 1.32%). Although the growth rate of the Baha’i Faith has slowed down from 2000-2010 (1.72%) it still exceeds the growth rate of Christianity (1.31%).
Statistics from:
Growth of religion - Wikipedia