Quarter Percent 1999-04-01 2.17155266015201 2000-04-01 2.12089077412513 2001-04-01 1.78010471204188 2002-04-01 2.07468879668050 2003-01-01 2.46153846153846 2003-04-01 3.16649642492339 2003-07-01 1.93089430894309 2003-10-01 2.04498977505112 2004-01-01 2.02634245187437 2004-04-01 2.12335692618807 2004-07-01 2.52270433905146 2004-10-01 2.20220220220220 2005-01-01 1.91339375629406 2005-04-01 2.40963855421687 2005-07-01 1.72064777327935 2005-10-01 1.59203980099502 2006-01-01 1.98412698412698 2006-04-01 3.22896281800391 2006-07-01 2.36686390532544 2006-10-01 1.95312500000000 2007-01-01 1.44787644787645 2007-04-01 2.29445506692161 2007-07-01 1.99430199430199 2007-10-01 1.32325141776938 2008-01-01 1.59924741298213 2008-04-01 2.14752567693744 2008-07-01 1.93548387096774 2008-10-01 2.21606648199446 2009-01-01 3.56164383561644 2009-04-01 5.55050045495905 2009-07-01 4.24354243542435 2009-10-01 4.03669724770642 2010-01-01 4.35571687840290 2010-04-01 6.33484162895928 2010-07-01 5.23465703971119 2010-10-01 4.85175202156334 2011-01-01 4.14414414414414 2011-04-01 5.93525179856115 2011-07-01 4.77047704770477 2011-10-01 4.14041404140414 2012-01-01 4.71441523118767 2012-04-01 5.77096483318305 2012-07-01 3.88788426763110 2012-10-01 3.06582506762849 2013-01-01 4.12556053811659 2013-04-01 4.93716337522442 2013-07-01 3.28888888888889 2013-10-01 3.51185250219491 2014-01-01 3.67775831873905 2014-04-01 4.66549295774648 2014-07-01 3.49956255468066