Quarterly Percent
1998-04-01 52.4
1999-04-01 52.5
2000-04-01 51.3
2001-04-01 54.5
2002-04-01 53.2
2003-04-01 55.4
2004-04-01 56
2005-04-01 57.7
2006-04-01 58.6
2007-04-01 60.3
2008-04-01 61.6
2009-04-01 61
2010-01-01 59.7
2010-04-01 59.3
2010-07-01 57.9
2010-10-01 59.1
2011-01-01 60.5
2011-04-01 60.8
2011-07-01 59.8
2011-10-01 61.3
2012-01-01 61.4
2012-04-01 62.6
2012-07-01 62.0
2012-10-01 61.4
2013-01-01 63.1
2013-04-01 64.4
2013-07-01 63.1
2013-10-01 62.4
2014-01-01 63.0
2014-04-01 65.2
2014-07-01 64.1
2014-10-01 64.2
2015-01-01 65.2
2015-04-01 65.7
2015-07-01 66.7
2015-10-01 67.4
2016-01-01 67.7
2016-04-01 68.5
2016-07-01 67.5
2016-10-01 68.0
2017-01-01 66.8
2017-04-01 67.9
2017-07-01 68.2
2017-10-01 69.2
2018-01-01 69.2
2018-04-01 69.1
