Quarterly Percent
1999-04-01 71.8
2000-04-01 77.3
2001-04-01 79.9
2002-04-01 71.4
2003-01-01 66.5
2003-04-01 80.4
2003-07-01 81.4
2003-10-01 65.8
2004-01-01 63.5
2004-04-01 79.3
2004-07-01 78.3
2004-10-01 66.6
2005-01-01 68.1
2005-04-01 82.8
2005-07-01 80.2
2005-10-01 73.3
2006-01-01 70.9
2006-04-01 86.8
2006-07-01 82.8
2006-10-01 73.6
2007-01-01 74.7
2007-04-01 85.9
2007-07-01 83.2
2007-10-01 75.5
2008-01-01 73.2
2008-04-01 84.4
2008-07-01 82.4
2008-10-01 72.4
2009-01-01 66
2009-04-01 81.7
2009-07-01 78
2009-10-01 66.6
2010-01-01 66.4
2010-04-01 84.4
2010-07-01 76
2010-10-01 67.9
2011-01-01 66.8
2011-04-01 85
2011-07-01 74.7
2011-10-01 65.7
2012-01-01 68.5
2012-04-01 84.4
2012-07-01 78.9
2012-10-01 70.9
2013-01-01 69.4
2013-04-01 85.1
2013-07-01 82.7
2013-10-01 74.8
2014-01-01 74.2
2014-04-01 84.3
2014-07-01 81.3
2014-10-01 72.9
2015-01-01 75.0
2015-04-01 87.0
2015-07-01 83.1
2015-10-01 75.5
2016-01-01 77.2
2016-04-01 90.1
2016-07-01 86.4
2016-10-01 78.2
2017-01-01 79.7
2017-04-01 91.8
2017-07-01 82.0
2017-10-01 75.5
2018-01-01 75.0
2018-04-01 86.5