Quarterly Percent
1999-04-01 42.8
1999-07-01 52.4
1999-10-01 45.6
2000-01-01 43.9
2000-04-01 43.5
2000-07-01 53.2
2000-10-01 45.6
2001-01-01 44.2
2001-04-01 42.2
2001-07-01 51.1
2001-10-01 44.4
2002-01-01 43.4
2002-04-01 41.6
2002-07-01 49.4
2002-10-01 43.5
2003-01-01 42.4
2003-04-01 42.3
2003-07-01 48.7
2003-10-01 44.2
2004-01-01 43.1
2004-04-01 41.4
2004-07-01 48.4
2004-10-01 45.8
2005-01-01 44.2
2005-04-01 44.1
2005-07-01 49.8
2005-10-01 45.5
2006-01-01 44.3
2006-04-01 44.4
2006-07-01 50.6
2006-10-01 46.5
2007-01-01 57.0
2007-04-01 58.2
2007-07-01 62.9
2007-10-01 58.4
2008-01-01 56.3
2008-04-01 56.7
2008-07-01 57.6
2008-10-01 52.0
2009-01-01 49.7
2009-04-01 48.4
2009-07-01 47.7
2009-10-01 45.1
2010-01-01 40.4
2010-04-01 41.2
2010-07-01 41.8
2010-10-01 40.1
2011-01-01 38.5
2011-04-01 38.5
2011-07-01 38.4
2011-10-01 37.3
2012-01-01 36.6
2012-04-01 36.9
2012-07-01 38.4
2012-10-01 36.9
2013-01-01 35.2
2013-04-01 37.3
2013-07-01 40.1
2013-10-01 36.2
2014-01-01 33.8
2014-04-01 33.9
2014-07-01 40.6
2014-10-01 38.8
2015-01-01 34.9
2015-04-01 35.8
2015-07-01 40.3
2015-10-01 38.1
2016-01-01 36.9
2016-04-01 42.8
2016-07-01 44.9
2016-10-01 42.7
2017-01-01 40.1
2017-04-01 41.6
2017-07-01 38.3
2017-10-01 39.0
2018-01-01 36.0
2018-04-01 39.2