Quarterly
2003-12-31 2.9025
2004-03-31 2.7632
2004-06-30 2.8663
2004-09-30 2.8243
2004-12-31 2.6664
2005-03-31 2.6343
2005-06-30 2.7453
2005-09-30 2.8305
2005-12-31 2.9053
2006-03-31 2.8706
2006-06-30 2.7442
2006-09-30 2.7097
2006-12-31 2.6799
2007-03-31 2.635
2007-06-30 2.5604
2007-09-30 2.5123
2007-12-31 2.385
2008-03-31 2.3068
2008-06-30 2.2103
2008-09-30 2.2995
2008-12-31 2.6245
2009-03-31 2.6518
2009-06-30 2.535
2009-09-30 2.4151
2009-12-31 2.3368
2010-03-31 2.4985
2010-06-30 2.7229
2010-09-30 2.6711
2010-12-31 2.5425
2011-03-31 2.5224
2011-06-30 2.4022
2011-09-30 2.4474
2011-12-31 2.5617
2012-03-31 2.634
2012-06-30 2.6928
2012-09-30 2.7618
2012-12-31 2.6631
2013-03-31 2.6152
2013-06-30 2.6434
2013-09-30 2.6079
2013-12-31 2.5367
2014-03-31 2.52
2014-06-30 2.5186
2014-09-30 2.6061
2014-12-31 2.7628