Quarterly Percent
1998-01-01 69.3
1998-04-01 70.2
1998-07-01 70.6
1998-10-01 70
1999-01-01 70.1
1999-04-01 70.4
1999-07-01 70.1
1999-10-01 69.2
2000-01-01 69.5
2000-04-01 70.7
2000-07-01 71.1
2000-10-01 70.7
2001-01-01 70.5
2001-04-01 71
2001-07-01 71
2001-10-01 70
2002-01-01 70.2
2002-04-01 71.9
2002-07-01 72.3
2002-10-01 72
2003-01-01 72
2003-04-01 73
2003-07-01 73.5
2003-10-01 72.8
2004-01-01 72.7
2004-04-01 73.7
2004-07-01 73.8
2004-10-01 73.5
2005-01-01 73.3
2005-04-01 74.3
2005-07-01 74.2
2005-10-01 74.2
2006-01-01 74.3
2006-04-01 75.3
2006-07-01 76
2006-10-01 75.4
2007-01-01 74.8
2007-04-01 75.6
2007-07-01 75.9
2007-10-01 75.4
2008-01-01 75.4
2008-04-01 76.4
2008-07-01 76.5
2008-10-01 75.7
2009-01-01 74.9
2009-04-01 75.8
2009-07-01 75.7
2009-10-01 74.7
2010-01-01 73.7
2010-04-01 74
2010-07-01 73.3
2010-10-01 71.6
2011-01-01 70.1
2011-04-01 69.8
2011-07-01 68.9
2011-10-01 66.5
2012-01-01 65
2012-04-01 64.4
2012-07-01 63.6
2012-10-01 62.5
2013-01-01 61.2
2013-04-01 61.7
2013-07-01 61.6
2013-10-01 60.8
2014-01-01 61.2
2014-04-01 62.4
2014-07-01 63.3
2014-10-01 62.7
2015-01-01 62.4
2015-04-01 64.9
2015-07-01 65.6
2015-10-01 65.1
2016-01-01 64.8
2016-04-01 66.8
2016-07-01 66.9
2016-10-01 65.4
2017-01-01 65.5
2017-04-01 68.2
2017-07-01 68.7
2017-10-01 67.1
2018-01-01 67.0
2018-04-01 69.5