Quarterly Percent
1999-01-01 57.5
1999-04-01 57.9
1999-07-01 56.2
1999-10-01 57.4
2000-01-01 57.4
2000-04-01 58.2
2000-07-01 56.8
2000-10-01 57.4
2001-01-01 58.1
2001-04-01 59
2001-07-01 58.1
2001-10-01 59.6
2002-01-01 60.6
2002-04-01 61
2002-07-01 60.5
2002-10-01 61.1
2003-01-01 62.5
2003-04-01 63.1
2003-07-01 62.4
2003-10-01 63.2
2004-01-01 63.7
2004-04-01 64.5
2004-07-01 64.1
2004-10-01 65
2005-01-01 66.4
2005-04-01 68.3
2005-07-01 67.7
2005-10-01 67.9
2006-01-01 69.4
2006-04-01 70.1
2006-07-01 68.3
2006-10-01 68.8
2007-01-01 69.8
2007-04-01 70.2
2007-07-01 68.7
2007-10-01 70.4
2008-01-01 71.7
2008-04-01 73.4
2008-07-01 73.6
2008-10-01 74.3
2009-01-01 75.7
2009-04-01 75.9
2009-07-01 73.4
2009-10-01 73.4
2010-01-01 74.6
2010-04-01 75.3
2010-07-01 73.8
2010-10-01 74.2
2011-01-01 76.1
2011-04-01 78.1
2011-07-01 77.9
2011-10-01 77.1
2012-01-01 77.1
2012-04-01 77.3
2012-07-01 75.5
2012-10-01 75.7
2013-01-01 75.5
2013-04-01 76.7
2013-07-01 76
2013-10-01 77
2014-01-01 76.8
2014-04-01 77.8
2014-07-01 75.2
2014-10-01 75.9
2015-01-01 75.2
2015-04-01 75.9
2015-07-01 74.2
2015-10-01 75.2
2016-01-01 76.1
2016-04-01 77.3
2016-07-01 74.7
2016-10-01 73.1
2017-01-01 74.1
2017-04-01 73.8
2017-07-01 73.8
2017-10-01 72.4
2018-01-01 75.6
2018-04-01 75.7