According to the type of publisher, the books were 55% commercial, 14% self-published, 10% governmental, 7% educational, and 14% published by other types of organizations.
Ifølge forelæggerne var 55 % af bøgerne kommercielle, 14 % selvpublicerede, ti procent regeringsudgivet, syv procent lærebøger og 14 % publiceret af andre organisationer.