12The BLS statistician looked at all addresses that entered the sample in 2008. That is, she looked at all addresses whose first or "bounding" interview was scheduled for 2008. Then she excluded the "Type C" addresses (the nonresidential or "bogus" addresses) and got the numbers above for the consumer units at the remaining addresses. Some consumer units moved away and others moved in during the period. The table above includes the consumer units that were originally there and moved away, but not the ones that moved in later (their replacements). [Source: Personal communication to Christopher Carroll on 2012/02/22.]