Quarterly Percent
1998-01-01 27.4
1998-04-01 27.7
1998-07-01 28
1998-10-01 27.7
1999-01-01 27.2
1999-04-01 27.5
1999-07-01 28
1999-10-01 27.8
2000-01-01 26.9
2000-04-01 27.3
2000-07-01 28.2
2000-10-01 28.3
2001-01-01 27.6
2001-04-01 26.9
2001-07-01 28.3
2001-10-01 29
2002-01-01 28.3
2002-04-01 28.6
2002-07-01 29.2
2002-10-01 29.5
2003-01-01 29.1
2003-04-01 30
2003-07-01 30.6
2003-10-01 31.2
2004-01-01 29.1
2004-04-01 30.2
2004-07-01 31.1
2004-10-01 31.8
2005-01-01 30.9
2005-04-01 31.1
2005-07-01 31.4
2005-10-01 32.2
2006-01-01 31.3
2006-04-01 32.6
2006-07-01 33
2006-10-01 32.8
2007-01-01 32.9
2007-04-01 33.9
2007-07-01 34.2
2007-10-01 33.7
2008-01-01 33
2008-04-01 34.6
2008-07-01 34.8
2008-10-01 34.8
2009-01-01 34.8
2009-04-01 36.2
2009-07-01 35.6
2009-10-01 35.8
2010-01-01 36.1
2010-04-01 36.5
2010-07-01 36.5
2010-10-01 36.9
2011-01-01 37.3
2011-04-01 37.3
2011-07-01 37.9
2011-10-01 38.9
2012-01-01 39
2012-04-01 40.3
2012-07-01 40.8
2012-10-01 41.1
2013-01-01 40.9
2013-04-01 42.1
2013-07-01 43.5
2013-10-01 44.2
2014-01-01 44.9
2014-04-01 45.9
2014-07-01 46.9
2014-10-01 47.2
2015-01-01 47.5
2015-04-01 48.6
2015-07-01 48.5
2015-10-01 48.4
2016-01-01 49.2
2016-04-01 50.7
2016-07-01 50.5
2016-10-01 50.9
2017-01-01 51.1
2017-04-01 52.3
2017-07-01 52.4
2017-10-01 53.1
2018-01-01 53.0
2018-04-01 54.1