I believe the figures I used were worldwide figures. 5-10% of all Muslims worldwide. To answer your question, I have only studied the situation in Southeast Asia.
The Southeast Asian connnection is often ignored for some reason by the United States who seems to have a primary focus only on the Middle East despite the fact that Arabs (Including OBL and cohorts) have been using Southeast Asia and the Sub Continent as the primary source of all their recruits.
Southeast Asia is also the springboard and transit point for exporting cell members to the United States. The situation is really quite organized with a complete network of safehouses in Malaysia (Klang and KL), Singapore (Bencoolen and Serangoon Rd.) and Thailand (Surat Thani and Haadyai).
The cell members will be given accomodation locally and the required papers indicating they work for a local company as an employee. The local company is of course affiliated with another company in the United States. The cell member is then transfered to the United States. Money and expenses are fronted to the cell members through a few 'money changers' near Serangoon Road in Singapore who receive funds from mainly Dubai.
These 'money changers' will also offer up to US5000 cash for help obtaining a visa at times or by giving letters and or 'security' on Company letterhead stating that a certain individual is an employee of yours. If you are caucasian and you live here long enough you will eventually find out how it all works. Did you ever really think that these people made their money on the exchange rate? LOL
I suppose I rant on about this a lot because Im frustrated and it seems no one cares or even realizes what is happening here.