Quarterly Percent
1999-04-01 50.6
1999-07-01 61.6
1999-10-01 52.9
2000-01-01 51.2
2000-04-01 51.4
2000-07-01 61.4
2000-10-01 52.7
2001-01-01 51.2
2001-04-01 49.9
2001-07-01 60.1
2001-10-01 51.4
2002-01-01 50.3
2002-04-01 48.7
2002-07-01 57.8
2002-10-01 51.1
2003-01-01 49.9
2003-04-01 49.4
2003-07-01 58.2
2003-10-01 51.7
2004-01-01 50.2
2004-04-01 48.9
2004-07-01 58.2
2004-10-01 52.4
2005-01-01 50.6
2005-04-01 50.5
2005-07-01 59
2005-10-01 53
2006-01-01 51.9
2006-04-01 52.7
2006-07-01 61.1
2006-10-01 54.1
2007-01-01 67.4
2007-04-01 69.4
2007-07-01 73.1
2007-10-01 67.5
2008-01-01 64.9
2008-04-01 66.9
2008-07-01 70.2
2008-10-01 61.8
2009-01-01 59.3
2009-04-01 62.2
2009-07-01 61.6
2009-10-01 57.1
2010-01-01 52.0
2010-04-01 55.0
2010-07-01 55.9
2010-10-01 52.6
2011-01-01 49.7
2011-04-01 51.9
2011-07-01 53.0
2011-10-01 50.9
2012-01-01 47.6
2012-04-01 51.6
2012-07-01 53.5
2012-10-01 48.5
2013-01-01 46.4
2013-04-01 51.4
2013-07-01 53.6
2013-10-01 48.2
2014-01-01 45.2
2014-04-01 47.6
2014-07-01 51.8
2014-10-01 47.5
2015-01-01 45.3
2015-04-01 47.2
2015-07-01 51.0
2015-10-01 46.3
2016-01-01 44.7
2016-04-01 52.8
2016-07-01 55.4
2016-10-01 49.4
2017-01-01 45.5
2017-04-01 48.9
2017-07-01 47.0
2017-10-01 45.5
2018-01-01 42.8
2018-04-01 47.3