Improving Green Bay's ground game

Over the past few seasons, as the Green Bay Packers have put forth an incredible offensive showing under the guidance of QB Aaron Rodgers and HC Mike McCarthy, one area where they've been somewhat lacking has been in the ground game. It hasn't mattered much: opposing defenses have known going into games that the Packers were going to be beating them primarily through the air, but that knowledge hasn't altered the outcome too much. Nevertheless, it's something on which the team can work this offseason.