The United States housing bubble was an economic bubble affecting many parts of the United Stateshousing market in over half of American states. Housing prices peaked in early 2006, started to decline in 2006 and 2007, and reached new lows in 2012. On December 30, 2008, the Case-Shiller home price index reported its largest price drop in its history. The credit crisis resulting from the bursting of the housing bubble is—according to general consensus—the primary cause of the 2007–2009 recession in the United States.