Year Dollars per Hour 2001-01-01 7.48 2002-01-01 7.18 2003-01-01 8.01 2004-01-01 8.65 2005-01-01 9.32 2006-01-01 10.01 2007-01-01 10.27 2008-01-01 9.96 2009-01-01 10.75 2010-01-01 11.26 2011-01-01 11.30 2012-01-01 11.64