Aliens Removed: Fiscal Years 1892-2012
“Removals are the compulsory and confirmed movement of an inadmissible or deportable alien out of the United States based on an order of removal. An alien who is removed has administrative or criminal consequences placed on subsequent reentry owing to the fact of the removal.”
This chart does not include “returns” which are the “confirmed movement of an inadmissible or deportable alien out of the United States not based on an order of removal. Most of the voluntary returns are of Mexican nationals who have been apprehended by the U.S. Border Patrol and are returned to Mexico.” I haven’t found return data for 2011 and 2012 that is consistent with the 1892-2010 data.