Quarterly Percent
1999-01-01 59.2
1999-04-01 59.6
1999-07-01 60.2
1999-10-01 60.1
2000-01-01 59.6
2000-04-01 59.9
2000-07-01 60.5
2000-10-01 60.6
2001-01-01 59.6
2001-04-01 59.4
2001-07-01 59.9
2001-10-01 59.5
2002-01-01 59.3
2002-04-01 59.5
2002-07-01 60
2002-10-01 60
2003-01-01 59.9
2003-04-01 60.6
2003-07-01 61
2003-10-01 60.8
2004-01-01 60.3
2004-04-01 60.2
2004-07-01 60.6
2004-10-01 60.8
2005-01-01 60.7
2005-04-01 61.2
2005-07-01 61.8
2005-10-01 61.7
2006-01-01 61.6
2006-04-01 62
2006-07-01 62.3
2006-10-01 62.3
2007-01-01 61.5
2007-04-01 61.6
2007-07-01 61.9
2007-10-01 61.6
2008-01-01 60.7
2008-04-01 60.9
2008-07-01 61.7
2008-10-01 61.4
2009-01-01 60.8
2009-04-01 61.2
2009-07-01 61.4
2009-10-01 61.5
2010-01-01 61.4
2010-04-01 61.9
2010-07-01 62.3
2010-10-01 62
2011-01-01 61.7
2011-04-01 62.3
2011-07-01 62.8
2011-10-01 62.7
2012-01-01 62.7
2012-04-01 63.5
2012-07-01 64.4
2012-10-01 64.2
2013-01-01 63.5
2013-04-01 64.6
2013-07-01 65.3
2013-10-01 65.4
2014-01-01 66.1
2014-04-01 66.8
2014-07-01 67.6
2014-10-01 67.4
2015-01-01 67.7
2015-04-01 68.5
2015-07-01 69.3
2015-10-01 69.1
2016-01-01 69.2
2016-04-01 70.0
2016-07-01 70.6
2016-10-01 70.7
2017-01-01 70.3
2017-04-01 71.1
2017-07-01 71.7
2017-10-01 71.6
2018-01-01 71.4
2018-04-01 71.9
