Quarterly Percent
1999-01-01 31.8
1999-04-01 34.7
1999-07-01 40
1999-10-01 36.6
2000-01-01 32.8
2000-04-01 34.7
2000-07-01 39
2000-10-01 36
2001-01-01 32.2
2001-04-01 34.1
2001-07-01 38.2
2001-10-01 32.3
2002-01-01 34.9
2002-04-01 34.8
2002-07-01 36.1
2002-10-01 31.7
2003-01-01 31.7
2003-04-01 33.3
2003-07-01 33.7
2003-10-01 35.9
2004-01-01 36.4
2004-04-01 38.3
2004-07-01 43
2004-10-01 37.8
2005-01-01 38.6
2005-04-01 36.4
2005-07-01 40.5
2005-10-01 36.7
2006-01-01 36.2
2006-04-01 38.5
2006-07-01 45.1
2006-10-01 37.1
2007-01-01 40.4
2007-04-01 42.8
2007-07-01 48.5
2007-10-01 41.1
2008-01-01 38.5
2008-04-01 42.6
2008-07-01 49.5
2008-10-01 41.2
2009-01-01 35.1
2009-04-01 38.7
2009-07-01 44.5
2009-10-01 38.1
2010-01-01 36.6
2010-04-01 35.2
2010-07-01 40.8
2010-10-01 37.9
2011-01-01 33.2
2011-04-01 35.1
2011-07-01 40.1
2011-10-01 34.2
2012-01-01 29.8
2012-04-01 30.7
2012-07-01 32.1
2012-10-01 29
2013-01-01 27.3
2013-04-01 29.8
2013-07-01 32.5
2013-10-01 29.1
2014-01-01 25.8
2014-04-01 29.2
2014-07-01 31.9
2014-10-01 31.0
2015-01-01 29.9
2015-04-01 30.5
2015-07-01 36.7
2015-10-01 31.0
2016-01-01 28.6
2016-04-01 29.5
2016-07-01 34.2
2016-10-01 31.9
2017-01-01 34.5
2017-04-01 38.7
2017-07-01 45.1
2017-10-01 36.1
2018-01-01 36.8
2018-04-01 41.9