Recent ITIL certification stats published by EXIN that originate from APMG show clearly that over quarter of a million ITIL certifications are issued every year (extrapolating the 9 months of stats).
200,000 of them are V2 and V3 Foundations. V3 Foundations outnumber V2 Foundations by about 6:1. So every year we certify another 200k ITILers. Think about it: three years of V3 certs, plus a decade of V2 certs. There was a rumour a while ago on twitter that we'd passed the million. I have no doubt it was true. As Mythbusters would say: "plausible"