. for analytical purposes only , the portion of citigroup 2019s allowance for loan losses attributed to the consumer portfolio was $ 22.366 billion at december 31 , 2008 , $ 12.393 billion at december 31 , 2007 and $ 6.006 billion at december 31 , 2006 . the increase in the allowance for loan losses from december 31 , 2007 of $ 9.973 billion included net builds of $ 11.034 billion . the builds consisted of $ 10.785 billion in global cards and consumer banking ( $ 8.216 billion in north america and $ 2