(PaulFraserCollectibles) - Christie's has announced that its global wine sales for 2012 will exceed $90m, securing its position as the leading auction house for wine this year. The total represents the second year in a row in which Christie's has surpassed the $90m mark for its wine auctions, despite a mixed year for the wine market as a whole; the Liv-ex 50, which tracks the prices of the 50 top Bordeaux first growths, has seen a decrease of 24.2% in the last two years.