Quarterly Percent
1999-01-01 23.1
1999-04-01 22.2
1999-07-01 21.7
1999-10-01 22
2000-01-01 21.5
2000-04-01 21.5
2000-07-01 21
2000-10-01 21.4
2001-01-01 21.8
2001-04-01 22.4
2001-07-01 22.5
2001-10-01 22.7
2002-01-01 22.6
2002-04-01 22.1
2002-07-01 22.8
2002-10-01 23.8
2003-01-01 23.1
2003-04-01 24.6
2003-07-01 25.5
2003-10-01 25.4
2004-01-01 25.3
2004-04-01 26
2004-07-01 27.6
2004-10-01 28.1
2005-01-01 28.5
2005-04-01 29.7
2005-07-01 31.1
2005-10-01 31.8
2006-01-01 32.1
2006-04-01 32.6
2006-07-01 33.7
2006-10-01 33.8
2007-01-01 34.1
2007-04-01 35.1
2007-07-01 36.4
2007-10-01 36.9
2008-01-01 37.4
2008-04-01 38.3
2008-07-01 40.8
2008-10-01 40.4
2009-01-01 39.2
2009-04-01 39.7
2009-07-01 40.2
2009-10-01 38.9
2010-01-01 40.2
2010-04-01 41
2010-07-01 40.9
2010-10-01 40.1
2011-01-01 40.1
2011-04-01 41.3
2011-07-01 42.2
2011-10-01 41.8
2012-01-01 42.1
2012-04-01 43.3
2012-07-01 43
2012-10-01 43.8
2013-01-01 44.3
2013-04-01 44
2013-07-01 44.2
2013-10-01 43.7
2014-01-01 42.8
2014-04-01 44.3
2014-07-01 46
2014-10-01 46
2015-01-01 45.9
2015-04-01 46.7
2015-07-01 47.6
2015-10-01 47.7
2016-01-01 47.5
2016-04-01 48.8
2016-07-01 49.5
2016-10-01 50.4
2017-01-01 51.7
2017-04-01 52.7
2017-07-01 53.3
2017-10-01 54.1
2018-01-01 54.0
2018-04-01 53.4