Quarterly Percent
1999-04-01 59.5
2000-01-01 55.6
2000-04-01 47.6
2000-07-01 57.7
2000-10-01 49.9
2001-01-01 48.5
2001-04-01 53
2001-07-01 55.6
2001-10-01 53.7
2002-01-01 55.7
2002-04-01 52.7
2002-07-01 51.5
2002-10-01 53.2
2003-01-01 53
2003-04-01 53.4
2003-07-01 52.1
2003-10-01 61.2
2004-01-01 54.7
2004-04-01 49.6
2004-07-01 53
2004-10-01 58.7
2005-01-01 55.4
2005-04-01 56.7
2005-07-01 55.3
2005-10-01 58.7
2006-01-01 61.3
2006-04-01 59.2
2006-07-01 55.3
2006-10-01 53.2
2007-01-01 56.5
2007-04-01 59.8
2007-07-01 58
2007-10-01 61.6
2008-01-01 64.7
2008-04-01 62.8
2008-07-01 64.5
2008-10-01 66.9
2009-01-01 63.3
2009-04-01 61.6
2009-07-01 56
2009-10-01 56.2
2010-01-01 49.6
2010-04-01 47.4
2010-07-01 51.8
2010-10-01 58.9
2011-01-01 55.1
2011-04-01 53
2011-07-01 60
2011-10-01 60.5
2012-01-01 56
2012-04-01 56.6
2012-07-01 60.6
2012-10-01 63.4
2013-01-01 60.8
2013-04-01 62
2013-07-01 61.7
2013-10-01 61.2
2014-01-01 59.8
2014-04-01 65.3
2014-07-01 67.2
2014-10-01 68.3
2015-01-01 62.8
2015-04-01 59.6
2015-07-01 64.9
2015-10-01 65.0
2016-01-01 60.4
2016-04-01 67.0
2016-07-01 67.1
2016-10-01 60.5
2017-01-01 66.1
2017-04-01 68.7
2017-07-01 66.2
2017-10-01 65.3
2018-01-01 61.9
2018-04-01 63.5