management 2019s discussion and analysis 150 jpmorgan chase & co./2012 annual report wholesale credit portfolio as of december 31 , 2012 , wholesale exposure ( cib , cb and am ) increased by $ 70.9 billion from december 31 , 2011 , primarily driven by increases of $ 52.1 billion in lending- related commitments and $ 30.2 billion in loans due to increased client activity across most regions and most businesses . the increase in loans was due to growth in cb and am