Quarterly Percent
1999-01-01 30.8
1999-04-01 32.2
1999-07-01 31.1
1999-10-01 30.1
2000-01-01 30.7
2000-04-01 31
2000-07-01 35.1
2000-10-01 32.7
2001-01-01 35.3
2001-04-01 33
2001-07-01 37.2
2001-10-01 37.9
2002-01-01 36.8
2002-04-01 37.4
2002-07-01 34.5
2002-10-01 33
2003-01-01 32
2003-04-01 31.8
2003-07-01 31.9
2003-10-01 37.1
2004-01-01 37.7
2004-04-01 41.2
2004-07-01 42
2004-10-01 42.7
2005-01-01 41.5
2005-04-01 42.5
2005-07-01 44.9
2005-10-01 43.7
2006-01-01 45.6
2006-04-01 45.2
2006-07-01 43.8
2006-10-01 43.6
2007-01-01 41.5
2007-04-01 46.5
2007-07-01 47.1
2007-10-01 45.8
2008-01-01 43.4
2008-04-01 46
2008-07-01 45.4
2008-10-01 44
2009-01-01 43.3
2009-04-01 47.7
2009-07-01 47.7
2009-10-01 46.8
2010-01-01 47.7
2010-04-01 44.8
2010-07-01 47.3
2010-10-01 42.6
2011-01-01 39.3
2011-04-01 39.2
2011-07-01 40.1
2011-10-01 39.3
2012-01-01 39
2012-04-01 39.7
2012-07-01 41.3
2012-10-01 43
2013-01-01 40.2
2013-04-01 42
2013-07-01 43
2013-10-01 41.9
2014-01-01 39.2
2014-04-01 42.9
2014-07-01 42.5
2014-10-01 42.4
2015-01-01 41.4
2015-04-01 44.4
2015-07-01 42.8
2015-10-01 41.8
2016-01-01 42.2
2016-04-01 44.9
2016-07-01 43.9
2016-10-01 43.3
2017-01-01 45.3
2017-04-01 48.9
2017-07-01 48.7
2017-10-01 49.1
2018-01-01 48.9
2018-04-01 52.0
