Quarterly Percent
1999-04-01 35.3
2000-01-01 36.6
2000-04-01 37.9
2000-07-01 38.8
2000-10-01 39.4
2001-01-01 39.4
2001-04-01 39.3
2001-07-01 39.4
2001-10-01 40.3
2002-01-01 40.9
2002-04-01 42
2002-07-01 43.3
2002-10-01 43.2
2003-01-01 44.2
2003-04-01 44.5
2003-07-01 44.4
2003-10-01 44.2
2004-01-01 44.8
2004-04-01 44.6
2004-07-01 45.6
2004-10-01 46
2005-01-01 45.8
2005-04-01 46.2
2005-07-01 46.3
2005-10-01 46.2
2006-01-01 46.1
2006-04-01 47.4
2006-07-01 48.2
2006-10-01 48.9
2007-01-01 49.6
2007-04-01 51
2007-07-01 51.4
2007-10-01 51.4
2008-01-01 51.7
2008-04-01 52.7
2008-07-01 53.5
2008-10-01 54
2009-01-01 54.9
2009-04-01 54.8
2009-07-01 55.5
2009-10-01 55.2
2010-01-01 52.9
2010-04-01 53.6
2010-07-01 53.9
2010-10-01 54.4
2011-01-01 53.9
2011-04-01 54.7
2011-07-01 55.6
2011-10-01 56.5
2012-01-01 56.6
2012-04-01 57.5
2012-07-01 57.9
2012-10-01 58.4
2013-01-01 58.3
2013-04-01 58.9
2013-07-01 59.6
2013-10-01 59.9
2014-01-01 59.0
2014-04-01 59.6
2014-07-01 60.2
2014-10-01 60.6
2015-01-01 61.1
2015-04-01 61.7
2015-07-01 61.9
2015-10-01 62.2
2016-01-01 62.7
2016-04-01 63.2
2016-07-01 63.8
2016-10-01 64.2
2017-01-01 64.6
2017-04-01 65.5
2017-07-01 66.0
2017-10-01 66.5
2018-01-01 66.5
2018-04-01 67.3