You were covered by a family plan for the entire year. In Jan-Feb you had a family plan, from March-December you were covered by a family plan even though the plan was in your wife's name.
Your spouse was covered by a family plan for the entire year. In Jan-Feb she was covered by your plan and March-December she was covered by her own plan, but it was a family plan in both cases.
The question is "how were you covered", not "whose name was the plan in."
