Quarterly Percent
1998-04-01 51.4
1999-04-01 51.1
2000-04-01 50.1
2001-04-01 53.6
2002-04-01 52.3
2003-04-01 54.1
2004-04-01 54.1
2005-04-01 55.6
2006-04-01 56.6
2007-04-01 58.1
2008-04-01 60
2009-04-01 59.6
2010-01-01 57.7
2010-04-01 57.4
2010-07-01 55.8
2010-10-01 57.0
2011-01-01 58.1
2011-04-01 58.6
2011-07-01 57.8
2011-10-01 59.1
2012-01-01 59.2
2012-04-01 60.5
2012-07-01 60.3
2012-10-01 59.0
2013-01-01 60.9
2013-04-01 62.1
2013-07-01 61.4
2013-10-01 60.8
2014-01-01 61.0
2014-04-01 62.8
2014-07-01 62.2
2014-10-01 62.3
2015-01-01 63.0
2015-04-01 63.6
2015-07-01 64.0
2015-10-01 65.1
2016-01-01 65.4
2016-04-01 66.2
2016-07-01 65.5
2016-10-01 66.0
2017-01-01 64.5
2017-04-01 65.8
2017-07-01 65.9
2017-10-01 66.8
2018-01-01 66.6
2018-04-01 66.7
