Quarterly
2003-12-31 4.9489
2004-03-31 5.0788
2004-06-30 5.1764
2004-09-30 5.1366
2004-12-31 4.9679
2005-03-31 4.9802
2005-06-30 5.0907
2005-09-30 5.0536
2005-12-31 5.0776
2006-03-31 5.0307
2006-06-30 5.0204
2006-09-30 5.0803
2006-12-31 5.129
2007-03-31 5.1502
2007-06-30 5.0869
2007-09-30 5.0775
2007-12-31 4.8784
2008-03-31 4.5617
2008-06-30 4.3558
2008-09-30 4.3458
2008-12-31 4.1285
2009-03-31 3.8017
2009-06-30 3.9326
2009-09-30 3.9623
2009-12-31 3.8183
2010-03-31 3.8911
2010-06-30 4.056
2010-09-30 4.1418
2010-12-31 4.0189
2011-03-31 4.0435
2011-06-30 3.9119
2011-09-30 3.9367
2011-12-31 4.026
2012-03-31 4.1383
2012-06-30 4.2623
2012-09-30 4.3618
2012-12-31 4.2761
2013-03-31 4.0573
2013-06-30 4.0592
2013-09-30 4.0424
2013-12-31 4.1054
2014-03-31 4.1708
2014-06-30 4.2395
2014-09-30 4.3502
2014-12-31 4.375