Canada , Greenland , Saint Pierre and Miquelon , United States , Belize , Costa Rica , El Salvador , Guatemala , Honduras , Mexico , Nicaragua , Panama , Antigua and Barbuda , Bahamas , Barbados , Bermuda , Virgin Islands (British) , Cayman Islands , Cuba , Dominica
Reference month is January, February or March , Reference month is April, May or June , Reference month is July, August or September , Reference month is October, November or December , Valid skip , Don't know , Refusal , Not stated