:Hi, I have Ricky Martin's certified sales only, his total available certified sales are 28.6 million. Since he's begun charting in 1991, for the List of best-selling music artists he needs 48% certified sales for his claims. With the 28.6 million certified units, he could be listed with 59.6 million claim, but our list starts at 75 million. I haven't gone over Timberlake's certified sales, but I would if there already are claimed figures that are 75 million or over.