Quarterly Percent
1999-01-01 33.8
1999-04-01 33.1
1999-07-01 37.5
1999-10-01 36.7
2000-01-01 39.8
2000-04-01 40
2000-07-01 39.9
2000-10-01 39.1
2001-01-01 43.3
2001-04-01 42.6
2001-07-01 41.4
2001-10-01 41
2002-01-01 42
2002-04-01 38.8
2002-07-01 39.5
2002-10-01 37.5
2003-01-01 37
2003-04-01 34.8
2003-07-01 34.3
2003-10-01 33.1
2004-01-01 36.6
2004-04-01 34.8
2004-07-01 33.7
2004-10-01 33.8
2005-01-01 32.9
2005-04-01 29.7
2005-07-01 30.6
2005-10-01 30.8
2006-01-01 29.4
2006-04-01 26.1
2006-07-01 26.6
2006-10-01 23.4
2007-01-01 21.3
2007-04-01 20.7
2007-07-01 21.2
2007-10-01 18.6
2008-01-01 18.8
2008-04-01 20
2008-07-01 17.9
2008-10-01 17.3
2009-01-01 22.1
2009-04-01 26.5
2009-07-01 29.1
2009-10-01 33.1
2010-01-01 35.5
2010-04-01 33
2010-07-01 35.2
2010-10-01 34.8
2011-01-01 33.8
2011-04-01 32
2011-07-01 33
2011-10-01 34
2012-01-01 35.1
2012-04-01 33
2012-07-01 34.3
2012-10-01 37.4
2013-01-01 38.2
2013-04-01 33.7
2013-07-01 33.1
2013-10-01 34.6
2014-01-01 31.8
2014-04-01 27.7
2014-07-01 29.7
2014-10-01 28.6
2015-01-01 26.5
2015-04-01 24.9
2015-07-01 27.2
2015-10-01 24.5
2016-01-01 22.4
2016-04-01 17.7
2016-07-01 20.1
2016-10-01 18.8
2017-01-01 17.6
2017-04-01 17.9
2017-07-01 19.1
2017-10-01 17.9
2018-01-01 17.5
2018-04-01 12.7
