Quarterly Percent
1999-01-01 28.4
1999-04-01 26.7
1999-07-01 25.4
1999-10-01 30.2
2000-01-01 29.9
2000-04-01 28.1
2000-07-01 28.5
2000-10-01 30.6
2001-01-01 32.1
2001-04-01 32.8
2001-07-01 28.3
2001-10-01 34.7
2002-01-01 33.4
2002-04-01 31.2
2002-07-01 29.2
2002-10-01 31.9
2003-01-01 36.3
2003-04-01 34.1
2003-07-01 30.7
2003-10-01 36.4
2004-01-01 32.4
2004-04-01 33.6
2004-07-01 28.4
2004-10-01 34.1
2005-01-01 32.4
2005-04-01 32.8
2005-07-01 30.5
2005-10-01 31.8
2006-01-01 32
2006-04-01 31
2006-07-01 26.8
2006-10-01 30.4
2007-01-01 28.6
2007-04-01 27.6
2007-07-01 28.9
2007-10-01 32.4
2008-01-01 31.9
2008-04-01 26.5
2008-07-01 25.9
2008-10-01 27.1
2009-01-01 28.2
2009-04-01 27.5
2009-07-01 28
2009-10-01 32.7
2010-01-01 32.9
2010-04-01 30.4
2010-07-01 31.9
2010-10-01 34.7
2011-01-01 33
2011-04-01 31.8
2011-07-01 31.3
2011-10-01 35.6
2012-01-01 36.4
2012-04-01 34
2012-07-01 35
2012-10-01 38.4
2013-01-01 38.2
2013-04-01 38
2013-07-01 36.5
2013-10-01 40.4
2014-01-01 40.5
2014-04-01 40.2
2014-07-01 36
2014-10-01 37.3
2015-01-01 39.0
2015-04-01 38.1
2015-07-01 36.3
2015-10-01 38.2
2016-01-01 35.1
2016-04-01 33.2
2016-07-01 32.0
2016-10-01 35.2
2017-01-01 37.2
2017-04-01 36.9
2017-07-01 34.7
2017-10-01 38.2
2018-01-01 38.0
2018-04-01 35.9