Quarterly Percent
1998-01-01 39.7
1998-04-01 38.4
1998-07-01 37.4
1998-10-01 40.6
1999-01-01 39
1999-04-01 38.3
1999-07-01 34.4
1999-10-01 37.8
2000-01-01 36.5
2000-04-01 35.3
2000-07-01 35
2000-10-01 34.9
2001-01-01 32.9
2001-04-01 31.6
2001-07-01 32
2001-10-01 32.2
2002-01-01 31.5
2002-04-01 31.5
2002-07-01 30.3
2002-10-01 32.3
2003-01-01 31.4
2003-04-01 30.9
2003-07-01 29.9
2003-10-01 31.4
2004-01-01 27.4
2004-04-01 28.9
2004-07-01 24.4
2004-10-01 28.3
2005-01-01 28.6
2005-04-01 25.6
2005-07-01 28.4
2005-10-01 27.7
2006-01-01 28.3
2006-04-01 24.9
2006-07-01 21.8
2006-10-01 26.4
2007-01-01 23.5
2007-04-01 20.8
2007-07-01 22.3
2007-10-01 26.6
2008-01-01 24.8
2008-04-01 25
2008-07-01 21.9
2008-10-01 27
2009-01-01 30.2
2009-04-01 27.5
2009-07-01 25.7
2009-10-01 30.5
2010-01-01 29.7
2010-04-01 28.7
2010-07-01 26.2
2010-10-01 32.7
2011-01-01 32.9
2011-04-01 32.5
2011-07-01 28.2
2011-10-01 34.5
2012-01-01 39.2
2012-04-01 35.6
2012-07-01 33.9
2012-10-01 41.4
2013-01-01 42.6
2013-04-01 37.1
2013-07-01 37.8
2013-10-01 47.9
2014-01-01 48.5
2014-04-01 41.5
2014-07-01 41.1
2014-10-01 47.5
2015-01-01 48.9
2015-04-01 43.0
2015-07-01 37.2
2015-10-01 41.2
2016-01-01 41.0
2016-04-01 36.1
2016-07-01 37.6
2016-10-01 43.8
2017-01-01 39.4
2017-04-01 35.7
2017-07-01 35.2
2017-10-01 39.0
2018-01-01 37.2
2018-04-01 34.1
