Quarter Percent 2003-06-30 3.58 2003-09-30 3.65 2003-12-31 3.96 2004-03-31 4.31 2004-06-30 4.78 2004-09-30 4.86 2004-12-31 4.81 2005-03-31 4.91 2005-06-30 4.69 2005-09-30 4.55 2005-12-31 4.6 2006-03-31 4.56 2006-06-30 4.73 2006-09-30 5.04 2006-12-31 5.27 2007-03-31 5.58 2007-06-30 5.96 2007-09-30 6.28 2007-12-31 5.99 2008-03-31 5.99 2008-06-30 5.95 2008-09-30 6.3 2008-12-31 2.9 2009-03-31 1.64 2009-06-30 1.19 2009-09-30 0.48 2009-12-31 0.53 2010-03-31 0.6 2010-06-30 0.71 2010-09-30 0.72 2010-12-31 0.74 2011-03-31 0.83 2011-06-30 0.83 2011-09-30 0.89 2011-12-31 1.02 2012-03-31 1 2012-06-30 0.77 2012-09-30 0.6 2012-12-31 0.52 2013-03-31 0.51