Quarterly Percent
1999-01-01 27.1
2000-01-01 28.2
2001-01-01 28.5
2002-01-01 31
2003-01-01 34.7
2003-04-01 35.7
2003-07-01 34.1
2003-10-01 34.8
2004-01-01 35.1
2004-04-01 35.8
2004-07-01 36.4
2004-10-01 36.9
2005-01-01 37.6
2005-04-01 38.3
2005-07-01 37.0
2005-10-01 36.6
2006-01-01 37.7
2006-04-01 37.9
2006-07-01 37.4
2006-10-01 37.4
2007-01-01 37.7
2007-04-01 38.5
2007-07-01 36.8
2007-10-01 37.3
2008-01-01 36.7
2008-04-01 37.4
2008-07-01 37.1
2008-10-01 37.8
2009-01-01 38.3
2009-04-01 39.2
2009-07-01 38.0
2009-10-01 38.5
2010-01-01 38.9
2010-04-01 39.6
2010-07-01 39.7
2010-10-01 39.7
2011-01-01 39.8
2011-04-01 41.4
2011-07-01 41.2
2011-10-01 42.5
2012-01-01 43.0
2012-04-01 44.1
2012-07-01 44.2
2012-10-01 45.7
2013-01-01 45.4
2013-04-01 45.7
2013-07-01 46.4
2013-10-01 46.5
2014-01-01 47.3
2014-04-01 48.7
2014-07-01 48.8
2014-10-01 49.2
2015-01-01 49.6
2015-04-01 51.0
2015-07-01 50.4
2015-10-01 50.1
2016-01-01 50.9
2016-04-01 51.3
2016-07-01 51.6
2016-10-01 51.7
2017-01-01 52.8
2017-04-01 53.4
2017-07-01 52.6
2017-10-01 53.1
2018-01-01 54.1
2018-04-01 53.7
