Quarterly Percent
1998-01-01 36.9
1998-04-01 47.4
1998-07-01 47.5
1998-10-01 38.1
1999-01-01 40.4
1999-04-01 60.9
1999-07-01 53.4
1999-10-01 41.6
2000-01-01 45.2
2000-04-01 61.8
2000-07-01 54.3
2000-10-01 42.7
2001-01-01 45
2001-04-01 61.4
2001-07-01 53.6
2001-10-01 43.4
2002-01-01 44.6
2002-04-01 61.1
2002-07-01 54.1
2002-10-01 43.7
2003-01-01 45.8
2003-04-01 60.9
2003-07-01 52.6
2003-10-01 40.6
2004-01-01 41.5
2004-04-01 59.3
2004-07-01 52.1
2004-10-01 42.7
2005-01-01 44.8
2005-04-01 60.2
2005-07-01 51.8
2005-10-01 44.9
2006-01-01 45
2006-04-01 60.8
2006-07-01 52.7
2006-10-01 45.6
2007-01-01 46.6
2007-04-01 61.6
2007-07-01 56.6
2007-10-01 49.5
2008-01-01 48.1
2008-04-01 62.9
2008-07-01 54.7
2008-10-01 48.4
2009-01-01 47.3
2009-04-01 62.5
2009-07-01 50.2
2009-10-01 44.7
2010-01-01 43.3
2010-04-01 59
2010-07-01 50.7
2010-10-01 44.3
2011-01-01 45.1
2011-04-01 60.6
2011-07-01 53.3
2011-10-01 43
2012-01-01 45.2
2012-04-01 61.3
2012-07-01 54.7
2012-10-01 46.9
2013-01-01 49.7
2013-04-01 62.7
2013-07-01 51.5
2013-10-01 47.6
2014-01-01 47.4
2014-04-01 63.1
2014-07-01 54
2014-10-01 45.9
2015-01-01 48.6
2015-04-01 62.8
2015-07-01 55.3
2015-10-01 46.4
2016-01-01 48.0
2016-04-01 61.8
2016-07-01 56.5
2016-10-01 46.2
2017-01-01 49.4
2017-04-01 62.7
2017-07-01 56.5
2017-10-01 48.1
2018-01-01 50.6
2018-04-01 65.5