Year Dollars per Week 2001-01-01 410.15 2002-01-01 440.08 2003-01-01 443.88 2004-01-01 454.40 2005-01-01 457.41 2006-01-01 486.78 2007-01-01 511.28 2008-01-01 500.54 2009-01-01 518.00 2010-01-01 481.73 2011-01-01 495.75 2012-01-01 502.32 2013-01-01 511.69 2014-01-01 577.67 2015-01-01 511.06 2016-01-01 467.68