Quarterly Percent
1999-04-01 54.3
1999-07-01 64.6
1999-10-01 56.4
2000-01-01 55
2000-04-01 56
2000-07-01 65.2
2000-10-01 56.4
2001-01-01 55.4
2001-04-01 54.7
2001-07-01 64.2
2001-10-01 55
2002-01-01 53.8
2002-04-01 52.8
2002-07-01 61.4
2002-10-01 54.9
2003-01-01 54
2003-04-01 53.2
2003-07-01 61.7
2003-10-01 55.2
2004-01-01 53.8
2004-04-01 52.9
2004-07-01 62
2004-10-01 54.9
2005-01-01 53.8
2005-04-01 53.4
2005-07-01 62.7
2005-10-01 56.5
2006-01-01 56.1
2006-04-01 57.2
2006-07-01 65.5
2006-10-01 58.3
2007-01-01 73.5
2007-04-01 74.4
2007-07-01 77.9
2007-10-01 72.1
2008-01-01 69.4
2008-04-01 71.1
2008-07-01 74.4
2008-10-01 65.2
2009-01-01 61.7
2009-04-01 65.1
2009-07-01 64.4
2009-10-01 59.8
2010-01-01 55.1
2010-04-01 57.6
2010-07-01 58.2
2010-10-01 53.1
2011-01-01 51.0
2011-04-01 53.5
2011-07-01 56.0
2011-10-01 53.8
2012-01-01 48.4
2012-04-01 53.1
2012-07-01 55.8
2012-10-01 50.3
2013-01-01 47.8
2013-04-01 52.6
2013-07-01 55.6
2013-10-01 50.5
2014-01-01 47.6
2014-04-01 50.1
2014-07-01 53.4
2014-10-01 49.6
2015-01-01 48.5
2015-04-01 50.3
2015-07-01 53.6
2015-10-01 48.2
2016-01-01 47.4
2016-04-01 54.5
2016-07-01 58.5
2016-10-01 50.3
2017-01-01 45.7
2017-04-01 49.7
2017-07-01 48.7
2017-10-01 47.4
2018-01-01 44.8
2018-04-01 48.8