Quarterly Percent
1998-04-01 70.4
1998-10-01 71.3
1999-04-01 70.6
1999-10-01 71.3
2000-04-01 72.0
2000-10-01 69.6
2001-04-01 67.5
2001-10-01 66.4
2002-01-01 64.9
2002-04-01 60.5
2002-07-01 61.4
2002-10-01 58.7
2003-01-01 62.6
2003-04-01 59.6
2003-07-01 55.1
2003-10-01 57.2
2004-01-01 54.5
2004-04-01 54.1
2004-07-01 54.7
2004-10-01 53.3
2005-01-01 52.7
2005-04-01 55.1
2005-07-01 50.3
2005-10-01 50.0
2006-01-01 48.5
2006-04-01 49.6
2006-07-01 44.7
2006-10-01 48.8
2007-01-01 44.1
2007-04-01 44.0
2007-07-01 44.9
2007-10-01 44.3
2008-01-01 41.1
2008-04-01 40.4
2008-07-01 42.0
2008-10-01 39.6
2009-01-01 37.2
2009-04-01 36.0
2009-07-01 45.0
2009-10-01 43.8
2010-01-01 43.0
2010-04-01 42.5
2010-07-01 44.6
2010-10-01 47.1
2011-01-01 45.1
2011-04-01 42.1
2011-07-01 43.5
2011-10-01 40.9
2012-01-01 39.8
2012-04-01 38.5
2012-07-01 37.8
2012-10-01 40.5
2013-01-01 40.8
2013-04-01 37.6
2013-07-01 39.2
2013-10-01 40.4
2014-01-01 36.1
2014-04-01 38.1
2014-07-01 39.2
2014-10-01 39.9
2015-01-01 36.9
2015-04-01 36.7
2015-07-01 35.3
2015-10-01 37.0
2016-01-01 34.6
2016-04-01 31.6
2016-07-01 36.2
2016-10-01 33.3
2017-01-01 35.0
2017-04-01 32.3
2017-07-01 32.9
2017-10-01 32.3
2018-01-01 32.3
2018-04-01 30.1