Using activity data, Warburg estimated a percentage of activity in Baháʼí communities around the world and concluded that in 2001 there were reliably 5.1 million registered Baháʼís in the world and 900,000 active Baháʼís, or 18% of the total. The estimates on activity were broken out by continent: Europe 82% active, USA and Canada 71%, Australia and New Zealand 91%, Africa 22%, India 5%, Other Asia 26%, Latin America 13%, and Oceania 43%. On the question of whether the Baháʼí numbers are intentionally inflated, Warburg feels that the “numbers are not rooted in any sinister manipulation of data”.