Quarterly Percent
1998-01-01 18.1
1999-01-01 18.3
1999-04-01 17.3
1999-07-01 16.8
1999-10-01 15
2000-01-01 18.9
2000-04-01 17.8
2000-07-01 16.7
2000-10-01 18.7
2001-01-01 18.3
2001-04-01 19.3
2001-07-01 17.9
2001-10-01 19.6
2002-01-01 19.3
2002-04-01 19.7
2002-07-01 20.6
2002-10-01 20.9
2003-01-01 20.2
2003-04-01 22.7
2003-07-01 21.8
2003-10-01 22.2
2004-01-01 18.1
2004-04-01 18.5
2004-07-01 18.4
2004-10-01 20.2
2005-01-01 20.7
2005-04-01 22.4
2005-07-01 23.6
2005-10-01 23.1
2006-01-01 24.3
2006-04-01 24.9
2006-07-01 25.1
2006-10-01 26.3
2007-01-01 26.9
2007-04-01 27
2007-07-01 27.5
2007-10-01 28.4
2008-01-01 29.6
2008-04-01 29.5
2008-07-01 30.9
2008-10-01 30.3
2009-01-01 30.4
2009-04-01 30.6
2009-07-01 31
2009-10-01 32.3
2010-01-01 33.7
2010-04-01 33.8
2010-07-01 34.4
2010-10-01 32.5
2011-01-01 33.1
2011-04-01 33.3
2011-07-01 33.2
2011-10-01 32.4
2012-01-01 33.3
2012-04-01 34.8
2012-07-01 34.7
2012-10-01 35.2
2013-01-01 35.2
2013-04-01 37
2013-07-01 36.7
2013-10-01 36.6
2014-01-01 35.9
2014-04-01 37.8
2014-07-01 38
2014-10-01 38.2
2015-01-01 38.8
2015-04-01 40.4
2015-07-01 40.5
2015-10-01 41.0
2016-01-01 41.3
2016-04-01 43.3
2016-07-01 43.1
2016-10-01 43.2
2017-01-01 43.3
2017-04-01 43.8
2017-07-01 45.1
2017-10-01 45.5
2018-01-01 46.3
2018-04-01 45.7