Quarter Percent 2003-06-30 2.06 2003-09-30 2.08 2003-12-31 2.14 2004-03-31 1.92 2004-06-30 2.17 2004-09-30 2.19 2004-12-31 2.2 2005-03-31 2.2 2005-06-30 2.08 2005-09-30 2.19 2005-12-31 2.63 2006-03-31 2.97 2006-06-30 3.23 2006-09-30 3.55 2006-12-31 3.84 2007-03-31 4.03 2007-06-30 4.3 2007-09-30 4.76 2007-12-31 4.72 2008-03-31 4.71 2008-06-30 5.14 2008-09-30 5.36 2008-12-31 3 2009-03-31 1.67 2009-06-30 1.32 2009-09-30 0.9 2009-12-31 0.88 2010-03-31 0.86 2010-06-30 0.85 2010-09-30 1.12 2010-12-31 1.24 2011-03-31 1.41 2011-06-30 1.7 2011-09-30 1.75 2011-12-31 1.4 2012-03-31 1.12 2012-06-30 0.8 2012-09-30 0.21 2012-12-31 0.22 2013-03-31 0.195