Quarterly Percent
1999-04-01 66.2
2000-04-01 66.6
2001-04-01 66.4
2002-04-01 66.2
2003-04-01 64.2
2004-04-01 62.1
2005-01-01 57.8
2005-04-01 57.1
2005-07-01 57
2005-10-01 55.3
2006-01-01 54.6
2006-04-01 54.3
2006-07-01 53.7
2006-10-01 52.1
2007-01-01 52.8
2007-04-01 50.8
2007-07-01 51
2007-10-01 49.9
2008-01-01 50.6
2008-04-01 49.2
2008-07-01 49.4
2008-10-01 48.7
2009-01-01 48.1
2009-04-01 46.7
2009-07-01 47.5
2009-10-01 46.2
2010-01-01 45.1
2010-04-01 45.9
2010-07-01 45.5
2010-10-01 45.1
2011-01-01 43.7
2011-04-01 43.4
2011-07-01 42.9
2011-10-01 42.9
2012-01-01 42.6
2012-04-01 42.1
2012-07-01 41.4
2012-10-01 41.3
2013-01-01 39.9
2013-04-01 39.7
2013-07-01 38.8
2013-10-01 38.4
2014-01-01 37.9
2014-04-01 37.1
2014-07-01 36.8
2014-10-01 36.6
2015-01-01 36.5
2015-04-01 36.4
2015-07-01 36.1
2015-10-01 35.7
2016-01-01 34.9
2016-04-01 34.1
2016-07-01 33.7
2016-10-01 33.7
2017-01-01 33.2
2017-04-01 32.6
2017-07-01 32.5
2017-10-01 31.9
2018-01-01 32.0
2018-04-01 31.9
