Today the International Data Corporation raised its 2012 tablet forecast to 106.1 million units, up from its previous forecast of 87.7 million units thanks to a stronger-than-expected 2011 finish. According to IDC, tablet shipments rose 155%, leading to a full-year 2011 total of 68.7 million units shipped. The IDC credits Amazon for raising consumers’ awareness of the tablet category in 2011 thanks to their popular $199 Kindle Fire.