Quarterly Percent
2004-01-01 20.3
2004-04-01 21
2004-07-01 19
2004-10-01 22.2
2005-01-01 23
2005-04-01 20.9
2005-07-01 20.3
2005-10-01 22.2
2006-01-01 21.2
2006-04-01 18.1
2006-07-01 17.4
2006-10-01 20.3
2007-01-01 18.9
2007-04-01 17
2007-07-01 16.7
2007-10-01 20.9
2008-01-01 18.5
2008-04-01 17.4
2008-07-01 18
2008-10-01 21.6
2009-01-01 23.2
2009-04-01 21.3
2009-07-01 21.9
2009-10-01 26.3
2010-01-01 28.3
2010-04-01 27.5
2010-07-01 23.8
2010-10-01 27.7
2011-01-01 27.7
2011-04-01 24.2
2011-07-01 25.2
2011-10-01 31
2012-01-01 33.3
2012-04-01 33.4
2012-07-01 31
2012-10-01 37.3
2013-01-01 41.3
2013-04-01 37.5
2013-07-01 37
2013-10-01 40.2
2014-01-01 44.6
2014-04-01 41.7
2014-07-01 38.5
2014-10-01 40.4
2015-01-01 42.1
2015-04-01 39.8
2015-07-01 34.1
2015-10-01 39.2
2016-01-01 39.8
2016-04-01 35.1
2016-07-01 32.3
2016-10-01 38.7
2017-01-01 35.8
2017-04-01 33.2
2017-07-01 30.4
2017-10-01 32.7
2018-01-01 31.4
2018-04-01 29.9