The Internet Archive operates 33 scanning centers in five countries, digitizing about 1,000 books a day for a total of more than 2 million books, financially supported by libraries and foundations. , the collection included 4.4 million books with more than 15 million downloads per month. , when there were approximately 1 million texts, the entire collection was greater than 0.5 petabytes, which includes raw camera images, cropped and skewed images, PDFs, and raw OCR data. Between about 2006 and 2008, Microsoft had a special relationship with Internet Archive texts through its Live Search Books project, scanning more than 300,000 books that were contributed to the collection, as well as financial support and scanning equipment. On May 23, 2008, Microsoft announced it would be ending the Live Book Search project and no longer scanning books. Microsoft made its scanned books available without contractual restriction and donated its scanning equipment to its former partners.