Quarterly Percent
1999-01-01 33.2
1999-04-01 33.9
1999-07-01 33
1999-10-01 32
2000-01-01 33.2
2000-04-01 33.5
2000-07-01 37.3
2000-10-01 34.5
2001-01-01 36.7
2001-04-01 34.8
2001-07-01 38.4
2001-10-01 40.1
2002-01-01 38.6
2002-04-01 38.4
2002-07-01 35.6
2002-10-01 34.2
2003-01-01 33.5
2003-04-01 33.2
2003-07-01 33.2
2003-10-01 38.1
2004-01-01 39.7
2004-04-01 42.7
2004-07-01 43.5
2004-10-01 44.2
2005-01-01 43.1
2005-04-01 45
2005-07-01 47.5
2005-10-01 46
2006-01-01 47
2006-04-01 46.4
2006-07-01 44.6
2006-10-01 45.1
2007-01-01 42.6
2007-04-01 48
2007-07-01 48.9
2007-10-01 47
2008-01-01 44.9
2008-04-01 48
2008-07-01 46.5
2008-10-01 46.1
2009-01-01 45.7
2009-04-01 49.9
2009-07-01 49
2009-10-01 48.2
2010-01-01 48.6
2010-04-01 46.9
2010-07-01 48.9
2010-10-01 45.8
2011-01-01 41.9
2011-04-01 42.8
2011-07-01 43.8
2011-10-01 42.2
2012-01-01 42.3
2012-04-01 42.6
2012-07-01 44
2012-10-01 45.6
2013-01-01 44.7
2013-04-01 45.2
2013-07-01 45.9
2013-10-01 44.7
2014-01-01 42.7
2014-04-01 46.3
2014-07-01 46.8
2014-10-01 47
2015-01-01 45.0
2015-04-01 48.1
2015-07-01 46.8
2015-10-01 45.5
2016-01-01 45.2
2016-04-01 48.1
2016-07-01 46.9
2016-10-01 48.2
2017-01-01 49.8
2017-04-01 52.3
2017-07-01 52.6
2017-10-01 52.4
2018-01-01 52.1
2018-04-01 55.2