Year Dollars per Week 2001-01-01 476.69 2002-01-01 485.52 2003-01-01 504.50 2004-01-01 526.54 2005-01-01 526.68 2006-01-01 551.82 2007-01-01 459.37 2008-01-01 524.11 2009-01-01 595.47 2010-01-01 574.80 2011-01-01 555.93 2012-01-01 538.66