Quarter Percent 2003-06-30 2.12 2003-09-30 2.08 2003-12-31 2.08 2004-03-31 2 2004-06-30 2.05 2004-09-30 2.07 2004-12-31 2.1 2005-03-31 2.1 2005-06-30 2.09 2005-09-30 2.11 2005-12-31 2.39 2006-03-31 2.63 2006-06-30 2.9 2006-09-30 3.25 2006-12-31 3.62 2007-03-31 3.85 2007-06-30 4.11 2007-09-30 4.41 2007-12-31 4.3 2008-03-31 4.36 2008-06-30 4.45 2008-09-30 5.05 2008-12-31 2.6 2009-03-31 1.12 2009-06-30 0.75 2009-09-30 0.38 2009-12-31 0.38 2010-03-31 0.36 2010-06-30 0.38 2010-09-30 0.62 2010-12-31 0.8 2011-03-31 0.82 2011-06-30 1.24 2011-09-30 1.29 2011-12-31 0.96 2012-03-31 0.7 2012-06-30 0.25 2012-09-30 0.04 2012-12-31 0.04 2013-03-31 0.05