Mise
isle of lucy
Doh, thought it was billionThere are 100 million people on the planet (and I was just adding a bunch of 9's there).
But yeah I think it's accurate enough, if we assume only 100 million records are (a) on the DB, and (b) alive at any point in time.
(PS. I realise you just added a bunch of nines in there, but the crux is that if it's accurate to 100 billion people, but only 2 people are on it, then it's a safe bet that it's correct.)